查询词典 practical units

Studied present measuring methods" advantages and disadvantages, and presented the necessity and importance of researching propellant transient heat transfer.2.according to 130 and aeronautic 90 rocket projectiles" structure, analysed and acquired physical and mathematical models for propellant transient heat transfer, also designed propellant temperature field simulation units for test.3.acquired discrete transient heat balance equation and temperature calculation program, and gave contrasting curves between experimental temperature values and program calculating temperature values as well as maximum errors and average square root errors between them.4.by programs based on the first class boundary condition, worked out temperature distribution in propellant temperature field simulation units at different time, analysed temperature field distribution law and main elements affecting heat transfer, acquired propellant mass weighted average temperature and one at the half position of propellant maximum thickness as well as maximum errors and average square root errors between them.5.established transient heat transfer mathematical model and temperature calculation program for the third class boundary condition, drew contrasting curves between temperature experimental values and calculation values and gave maximum errors and average square root errors between them, got temperature distribution in the simulation unit at different time and main elements affecting heat conduction, figured out propellant mass weighted average temperature and one at the half position of propellant maximum thickness as well as maximum errors and average square root errors between them.

分析了现有测试方法的优缺点，提出了研究推进剂瞬态导热的必要性和重要性。 2。根据130和航90两种火箭弹的结构，分析得到了推进剂传热的物理模型和数学模型，设计了推进剂温度场模拟实验装置。 3。得到了离散形式的瞬态热平衡方程和温度场计算程序，给出了实验温度与程序计算温度值的对比曲线及其最大偏差与均方差。 4。利用程序求出了第一类边界条件下、不同时刻推进剂温度场模拟装置中的温度分布，分析了温度场的分布规律和影响传热的主要因素，求出了推进剂质量加权平均温度和最大肉厚1／2处的温度时间曲线并给出了两者之间的最大偏差与均方差。 5。建立了第三类边界条件下的瞬态导热数学模型和温度计算程序，求出了温度实测值与计算值的对比曲线并给出了两者之间的最大偏差与均方差，得到了不同时刻温度场模拟装置的温度分布与影响导热的主要因素，求出了推进剂质量加权平均温度和最大肉厚1／2处温度及两者之间的最大偏差与均方差，讨论并确定了能代表130和航90推进剂温度的特征点的位置。

Companies have advanced equipment, strong technical force, has a strong professional, intensive, large-scale production capacity, high-speed weaving machine currently has more than 1,000 units, high-temperature dyeing machines, 18 units, normal temperature dyeing machine 4 sets, warper 13 , more than 20 sets of printing machines, other machines°à¨, is a professional manufacturer of high-quality polyester ribbon, polyester woven edge ribbon printed mark, nylonsnow, all kinds of velvet belt, ribbon printing and all kinds of handmade floriation ( such as bow, roses, packaged node, etc.) well-known manufacturers, the average daily output of various ribbon and five million yards ribbon floriation 800,000, Products are exported to more than 100 countries and regions in the mainland and even the world's largest polyester ribbon and ribbon floriation manufacturer.

公司 设备先进，技术力量雄厚，具有较强的专业化、集约化、规模化生产能力，目前拥有高速织带机 1000 余台，高温染色机 18 台，常温染色机 4 台，整经机 13 台，印刷机 20 余套，其他机器百余台，是一家专业生产高品质涤纶丝带、涤纶织边印唛丝带、尼龙雪纱带、各种丝绒带、织带印刷和各类手工花饰（如蝴蝶结、玫瑰花、包装结等）的著名制造商，平均日产各类织带 500 万码和各种织带花饰 80 万个，产品远销 100 多个国家和地区，是大陆乃至全球最大的涤纶丝带和织带花饰制造商。

Recent developments include pressure transmitters small enough to be placed in the eye, ultrasonic and radio units for free-swimming dolphins, units for tracking wild animals, and pill-sized transmitters of many designs and functions that can operate continuously for several years.

最近的发展包括压力传输器，它足够小能被放置于眼部，传播超声和无线电信号给自由游泳的海豚，用于追踪野生动物的部件，并且药丸大小的传输器有许多的涉及范围和功能，它能持续运作几年。

The system of natural units; fundamental constants; dimensional; International system of units; conversion relation; energy

自然单位制；基本常数；量纲；国际单位制；转换关系；能量

National measurement standards may be primary standards, which are primary realizations of the SI units or agreed representations of SI units based on fundamental physical constants, or they may be secondary standards which are standards calibrated by another national metrology institute.

国家测量标准可以是基准，它们是 SI 单位的原级实现或是以基本物理常量为根据的 SI 单位约定的表达式，或是由其他国家计量院所校准的次级标准。

The company's main products: color detection instruments: Glossiness Miriam, Miriam color spectrophotometry, standard light source for color light box, transmissioní°Miriam, Miriam orange peel, fresh young tester; surface coating physical properties testing instruments: Coating thickness, wet film thickness, temperature tracker, surface humidity instrument, dewpoint meter, roughness instrument, electric spark pinhole leak detectors; Detect mechanical properties of surface coating equipment: zoned grid, and pencil hardness tester , impact tester, hardness testing sticks, Latvia Law / hydraulic adhesion tester, abrasion tester, cylinder / cone bending tester, cups sudden device, surface tension instruments, scratch pen, indentation hardness tester, etc.; paint coating equipment dedicated category: fineness board, drying time recorder, wet adhesion tester, paint ohmmeter, PH, the coating device, mixer, bead mill, mixer, spray gun, putty detector Miriam, white tester, iron cobalt colorimeter, moisture titrator; viscosity-type equipment: Viscosity Cup, density cup, bubble viscosity tube viscometer, infiltration cup rheometer, viscosity units conversion meter; laboratory standard consumables: Mitsubishi pencil tests, 3M adhesive tape test, RCA tape, rubber, the hiding power test paper for color tubes, microscopes dedicated LED ring light source, transfer ink knife and ink scraper, brush, Color Card, gray cards, zirconia beads, glass beads, pieces of cement mortar, the standard of fly ash, the standard viscosity fluid, stopwatch, chemical industry-standard compilation of manuals, paint paint testing manual; test standard Material: tin plate, steel plate, aluminum sheet, asbestos-cement pressure plate, Eterpan, glass, maple panels, MDF, copper film, polyester film, copper; measuring meter and optical instruments: digital calipers, micrometer, dial gauge a high scale, depth gauge, thickness gauge, diameter gauge, gauge block, magnifiers, microscopes, projectors, video measuring instrument; environmental test equipment: oven, constant temperature and humidity box, hot and cold circulating water bath, salt spray test chamber, high temperature resistance furnace, fluorescent UV aging chamber, xenon lamp aging chamber; electronics equipment: infrared thermometer, multimeter, clamp sheet, thermal imager, temperature and humidity meter; anti-static instruments: static tester, surface resistivity device, flat-panel monitor, anti-static footwear tester, wrist strap tester, body Tester; other types of instruments and equipment: torque tester, temperature and humidity recorder, push pull, the vibrometer, speed instrument, analytical balance, industrial Scale Units, dust particle counter, X-ray fluorescence coating thickness measurement and elemental composition analyzer, and so on.

公司主营产品：外观颜色检测仪器：光泽度仪、分光色差仪、标准光源对色灯箱、透射雾影仪、桔皮仪、鲜映性测试仪；表面涂层物理性能检测仪器：涂层测厚仪、湿膜测厚仪、炉温跟踪仪、表面湿度仪、露点仪、粗糙度仪、电火花针孔检漏仪；表面涂层机械性能检测仪器设备：划格器、铅笔硬度计、冲击试验仪、硬度试验棒、拉脱法/液压式附着力试验仪、耐磨耗试验机、圆柱/圆锥弯曲试验仪、杯突仪、表面张力仪、划痕笔、压痕硬度计等；涂料油漆类专用仪器设备：细度板、干燥时间记录仪、湿附着力耐擦洗试验仪、油漆电阻计、PH计、涂膜器、混合机、珠磨机、搅拌机、喷枪、腻子测定仪仪、白度仪、铁钴比色计、水份滴定仪；粘度类仪器设备：粘度杯、密度杯、气泡粘度管、粘度计、渗透杯、流变仪、粘度单位换算计；实验室标准消耗品：三菱测试铅笔、3M测试胶带、RCA纸带、橡皮条、遮盖力测试纸、对色灯管、显微镜专用LED环型光源、调墨刀、墨铲、狼毫刷、色卡、灰卡、锆珠、玻璃珠、水泥砂浆块、标准粉煤灰、标准粘度液、秒表、化学工业标准汇编手册、涂料油漆测试手册；测试级标准基材：马口铁板、钢板、铝板、石棉水泥加压板、埃特板、玻璃板、枫木面板、中纤板、紫铜片、聚酯膜、铜棒；量具量仪及光学仪器：数显卡尺、千分尺、千分表、高度尺、深度规、厚度规、内径规、量块、放大镜、显微镜、投影仪、影像测量仪；环境测试设备：烘箱、恒温恒湿箱、冷热循环水浴、盐雾试验箱、高温电阻炉、荧光紫外老化试验箱、氙灯老化试验箱；电子类仪器：红外测温仪、万用表、钳形表、热像仪、温湿度仪；防静电仪器：静电测试仪、表面电阻仪、平板监测仪、防静电鞋袜测试仪、手腕带测试仪、人体综合测试仪；其他类仪器设备：扭力测试仪、温湿度记录仪、推拉力计、测振仪、转速仪、分析天平、工业台秤、尘埃粒子计数器、 X-射线荧光涂层测厚和元素成分构成分析仪，等等。

Yide international brand-name companies for many years engaged in the marketing of diesel generating units and services, is well-known domestic brands - COOLTECH Ketai series diesel generating units and related intelligent control system for agents in Guangdong Province.

怡德公司多年从事国际名牌柴油发电机组的营销和服务，是国内知名品牌——COOLTECH科泰系列柴油发电机组和相关智能控制系统的广东省代理商。

Kang Ling Group has a number of international brands and multinational companies a strategic partnership: In Singapore, and has been generating units producing more than 40 years experience in PANEXP Group cooperation with two imports CUMMINS, PERKINS series of generating units.

康菱集团已和多家国际品牌跨国公司结成战略伙伴：在新加坡，和已有四十多年发电机组生产经验的PANEXP集团合作，整机进口CUMMINS、PERKINS系列发电机组。

Sichuan Eastern hang power equipment limited liability company in Chengdu Longquan National Economic and Technological Development Zone, the company's production base valve power plant, the company has 300 MW sub-critical unit, 600 MW supercritical generating units, 1000 MW power station Ultra-supercritical generating units required for high-temperature High-pressure valve design, development and manufacturing capabilities.

四川东方乘风电力装备有限责任公司位于成都市龙泉国家经济技术开发区，是公司电站阀门的生产基地，公司具备对300MW亚临界机组、600MW超临界机组、1000MW超超临界机组所需电站高温高压阀门的设计、开发和制造能力。

In 1976, the International Astronomical Union revised the definition of the AU for greater precision, defining it as that length for which the Gaussian gravitational constant takes the value 0.01720209895 when the units of measurement are the astronomical units of length, mass and time.

但实际上地球绕日的轨道不是一个圆形，而是一个椭圆形：最初天文单位的定义就是上述椭圆的半长轴的长度。1976年，国际天文学联会把一天文单位定义为一颗质量可忽略、公转轨道不受干扰而且公转周期为365.2568983日的粒子与一个质量相等约一个太阳的物体的距离。

In this new architectural plan the Garden of Golgotha came to be at the centre of the new city.

Aelia 是高举他自己，并在此城内朝拜罗马诸神。

The continuous nature of peat accumulation means that terrestrial coaly rocks may provide a higher resolution and more complete record of base-level change than the time-equivalent shallow-marine strata, thus enabling the identification of highfrequency cycles that are not recorded in themarine strata.

泥炭积累的持续性质的手段，陆地coaly岩石可提供较高的分辨率和更完整的记录基准面变化的影响时，相当于浅海阶层，从而使确定的高频周期，不记录在themarine 阶层。