查询词典 a constant temperature

According to actual condition, a model of wall thickness of rotary kiln is established. The constant coefficients in the model, including thermal conductivity, heat transfer coefficient, Fourier coefficient and contact resistance, are closely calculated. A formula of contact resistance is draw from a great deal of data of surface and inner temperature of rotary kiln. The wall thickness of rotary kiln is simulated by MATLAB. The simulation result is transmitted from MATLAB to DELPHI through a group of interface functions compiled by VC++. The basic graphs-circle and line are analyzed by the means of the technique of Visualization in Scientific Computing and the Bresenham arithmetic, and are realized the visualization of the wall thickness. The contents of communication between master computer and slaver computer are designed and the error control technique, the idea of multi-thread and the embedded assembly language are applied to realize the temperature data transmission and graph transmission, which largely improved the speed of transmission and the reliability and stability of system.

建立了符合现场实际的回转窑壁厚数学模型；结合现场采用红外测温仪测量所得的温度数据和回转窑的实际结构数据，确定出适合该模型的定常系数(包括导热系数、换热系数、傅立叶系数、接触热阻等)，并得出与回转窑工况的相近的接触热阻公式ln=T~(0.5154)-36.7868；利用MATLAB软件仿真出回转窑壁厚，并将运算结果通过在VC++的编译环境下编译出MATLAB和DELPHI的接口函数传输到该监测系统中，实现了温度数据的转换和交换；运用科学计算可视化技术和Bresenham扫描转换算法对基本图形——圆和直线进行分析，从而实现了仿真后的壁厚数据可视化；在研究异步串行通信方式的基础上，设计了该系统上下位机功能和通信内容，并运用差错控制技术、多线程思想以及嵌入式汇编语言实现了温度数据和图形数据在上下位机之间的远程传输，提高了数据传输的速率和系统的可靠性、稳定性。

The results show that when other parameters remain constant, the comfortable indoor air temperature is 17.4℃ to 20.9℃ for a sedentary person with an indoor clothing habit of 1.2clo to 1.5clo in winter, corresponding to a panel surface mean temperature of 21.4℃ to 25.3℃, and that overhigh panel surface temperature both wastes energy and decreases human thermal comfort.

初步研究结果表明，当其他条件一定，人体处于静坐状态且为冬季室内习惯着装（服装热阻为1.2~1.5 clo）时，舒适的房间空气温度为17.4~20.9℃，对应的地板表面平均温度约为21.4~25.3℃；过高的地板表面温度不但不利于节能，同时也直接影响人体的热舒适感。

A new making process of PTC small sensors is introduced and technological focal points in operations are detailed PTC small sensors (2 mm×2 mm×0 3 mm)with Curie temperature 120 ℃,resistivity at room temperature about 100 ohm·cm, temperature coefficient of resistance above 15%℃-1 ,rate of rise of resistivity ρ max /ρ min above 10 3 and time constant below 2 seconds have been made by use of new technology of isohydraulic formation, chip cut and scratch.

介绍了一种新的微型PTC元件的制造工艺，并对各个工序的技术重点做了详细阐述。作者采用等静压成型和切片、划片新工艺制成2mm×2mm×0.3mm微型PTC元件，其居里温度为120℃，室温电阻率为100Ω·cm，升阻比ρmax／ρmin大于103，电阻温度系数α≥15％℃－1，时间常数小于2s。

The thermoinduced coloration system of fluorane/iodonium salt has been investigated. The kinatic studies of thermoinduced color development reaction in polymer film was performed. It was found that two different phenomena appeared in the relationship between reaction rate constant and temperature. A very low value of k〓(0〓mol〓·l·s〓) and very high energy of activation E〓(149 KJ·mol〓) observed in the region of low temperature, whereas a larger value of k〓(1~10 mol〓·1·s〓) and smaller energy of activation (E〓33 KJ·mol〓) displayed in the region of high temperature of 150℃.

研究了荧烷/碘鎓盐热致显色反应体系，进行了分子膜中热生色反应动力学的研究，发现热生色速度常数k〓和温度关系呈现二种不同情况：在低温区，k〓值很小（＜10〓mol·1·s），活化能很大（E〓=149KJ·mol〓）；而在高温区，k〓值较大（1~10〓mol·1·s），活化能较低（E〓=33KJ·mol〓），它们的转折点位于温度（T〓=119℃），表明高于T〓是进行热致显色反应的重要条件；考虑到它们用作热记录介质的可能，研究了熔融状态中热生色反应。

The company has more than 500 employees, of whom 48 were managers, developers and more than 20 technical personnel, quality control staff of 45, with eight production lines, molding machine 30, high-speed precision punch hardware 8 Units, mold processing equipment has : 9 Units precision grinder, EDM machine 7 Units, Units 6 Line cutting machine, milling machine 5 Units; quality control testing equipment have: salt spray test machine, constant temperature and humidity aging machine, plug testing machine, high precision tester, projector , 2.5 million tester, a variety of precision current-voltage impedance tester, etc., the monthly production capacity of 20,000,000 SET.

公司现有员工500余人，其中管理人员48人、开发技术人员20余人、品管人员45人、拥有生产线8条、成型机30台、高速精密五金冲床8台、模具加工设备有：精密磨床9台、EDM机7台、线割机6台、铣床5台；品管检测设备有：盐雾试验机、恒温恒湿老化机、插拔测试机、精密高度测试仪、投影仪、2.5次元测试仪、各种精密电流电压阻抗测试仪等，月生产能力2000万SET。

The quality of well-equipped, including advanced energy dispersive X-ray fluorescence analyzer, salt spray test machine, projection for expansion, vibration testing machine and vacillating test machine, wearable rub tester, constant temperature and humidity test machine, Taiwan sunny electro-acoustic instrument, and so on, each one products have to undergo a rigorous the quality inspection before shipment to ensure that the products of high quality, high reliability.

公司的质量检测设备齐全，包括先进的能量色散型X射线荧光分析仪，盐雾试验机，投影扩大仪，振动试验机，摇摆试验机，耐磨擦试验机，恒温恒湿试验机，台湾阳光电声仪等等，每一个产品均经过严格的质量检测才能出货，保证了产品的高品质，高可靠性。

Dongguan Jian Qiao Equipment Co., Ltd was established for many years, located in Guangdong Province Tangxia Tangxia Town, Dongguan City Industrial Zone on the 30th the first company has been engaged in the electronic testing equipment, environmental test equipment sales services and the development of automatic test system, the main product has : testing machine, furniture testing machine, swing machine, optical quality control testing instruments, wire tester, wear-resistant machine, constant temperature and humidity machine, optical image measuring instrument, wire testing machine, office chair repeated impact test machine, a desk drawer repeated testing machine, office chair backrest repeated testing machine, office chairs rotary life testing machine, officelife test machine, plug line hoist swing test, MIT-style folding strength testing machine, tensile testing machine, micro-computers, paper tube compression testing machine, aging test machine, testing machine decolorization extent, resistant to rubbing tester, testing machine embrittlement, sudden pull test machine, testing machine, such as bonding strength.

东莞市剑乔仪器设备有限公司创建多年，位于广东省东莞市塘厦镇塘厦第一工业区30号公司一直从事电子测试仪器、环境试验设备的销售服务和自动测试系统的开发，主要产品有：试验机，家具试验机，摇摆试验机，光学品管检测仪器，线材测试仪，耐磨机，恒温恒湿机，光学影像测量仪，线材试验机，办公椅反复冲击试验机，办公桌抽屉反复试验机，办公椅反复靠背试验机，，办公椅旋转寿命试验机，办公椅脚寿命试验机，插头线吊重摆动试验，MIT式耐折强度试验机，微电脑拉力试验机，纸管抗压试验机，老化试验机，脱色程度试验机，耐揉试验机，脆化试验机，突拉试验机，胶合强度试验机等。

By means of numerical simulation in different heat conduction processes, the steady-state temperature field in upper arm skin tissue, the temperature distribution and the burn depth threshold after 15 s exposure to a heat source at 90℃, the surface temperature rising of skin subjected to a surface-applied constant heat flux, and the steady state temperature elevation distribution under the thermal insulation, are obtained.

通过数值模拟，获得了不同皮肤组织结构模型下上臂皮肤组织内的稳态温度场和90℃高温热源作用15 s后皮肤组织内的温度分布，以及皮肤组织热损伤深度的变化、常热流作用下皮肤组织表面的温升曲线和表面绝热条件下皮肤组织内的稳态温升分布。

Introduce and analysed lukewarm the characteristic that controls a system, gave out then the design that gray forecasts ambiguous controller, through Matlab emulation experiment makes clear, when systematic parameter produces change, use this method and photograph of effect of groovy PI control to compare, having better control precision and dynamic character, to actual constant temperature control has certain direct sense.

介绍和分析了温控系统的特征，接着给出了灰色猜测模糊控制器的设计，通过Matlab仿真试验表明，在系统参数发生变化的时候，采用此方法和常规PI控制效果相比，具有着更好的控制精度和动态特性，对实际恒温控制具有一定的指导意义。

Under the condition of constant temperature gradient of extraction fractionating column of said separation apparatus a linear pressure boosting mode is used, so that the petroleum heavy oil, in particular petroleum residual oil can be cut into ten-odd or more narrow distillations according to the molecular weights.

在分离装置萃取分馏柱恒定温度梯度下，采用线性升压方式，可以将石油重质油，特别是石油渣油大致按分子量的大小切割成十几个或甚至更多个窄馏分。具有分离效果好，过程简单，靠近生产实际的特点；对生产实际有指导作用。

Since historical times,England ,where the early inhabitants were Celts, has been conquered three times .

从有历史以来，英国，在此地早期居住的是凯尔特人，已经被征服了三次。

Bluetooth OBEX File Transfer Enables the sending and receiving of files on your phone via Bluetooth.

蓝牙OBEX文件移动允许经过蓝牙传送和接受文件。。。。