查询词典 pit bottom

In this paper, numerical computations are made on the scattering of ultrasonic pulse waves with different centroid frequencies of 100 kHz,500 kHz and 1 MHz in fluid-filled finite-length perforation by using Finite Element Method,where three kinds of models of perforation bottom, I.E., flat bottom, stepped bottom and acuminated bottom,are assumed to simulate the practical bottoms of perforation.

乔文孝，杜光升。射孔孔眼中散射超声脉冲波的FEM模拟。测井技术，2001，25（2）：96～100 采用有限元素法，分别数值计算了平底孔道、台阶式孔道和尖劈状孔道等3种孔眼模型中不同中心频率(100 kHz、500kHz、1 MHz)的散射超声脉冲波。

Rehoused in the bottom of the furnace two wall and put aside silk brick, the workpiece is heated on the silicon carbide furnace bottom board, the use of the best in the box at the bottom, put a piece of stainless steel plates, this prevents the workpiece impact on the furnace bottom.

安置在炉膛两壁及炉底的搁丝砖上，被加热工件放在炉膛内的碳化硅炉底板上，使用时最好在箱式炉底上放一块不锈钢板，这样可防止工件对炉底板的撞击。

Rehoused in the bottom of the furnace two wall and put aside silk brick, the workpiece is heated on the silicon carbide furnace bottom board, the use of the best in the box atthe bottom, put a piece of stainless steel plates, this prevents the workpiece impact on the furnace bottom.

安置在炉膛两壁及炉底的搁丝砖上，被加热工件放在炉膛内的碳化硅炉底板上，使用时最好在箱式炉底上放一块不锈钢板，这样可防止工件对炉底板的撞击。

Combined with investigation results of the furnace body erosion before relining, this paper analyzes the cause of production problems appeared in the first campaign life of the blast furnaces. Because of the existence of design shortcomings in large cooling block and bosh cooling stave, it resulted in poor furnace performance, such as stronger peripheral gas flow and irregular profile. The quick rise of bottom temperature of No.7 BF was caused by the penetration of molten iron into the joint of bottom carbon block, wheresas the quick rise of bottom temperature of No.6 BF was due to gas fleeing through the furnace bottom.

结合大修前炉体破损情况，对这两座高炉第一代炉役生产中出现的问题进行了调查研究。7号高炉大型模块和炉腰冷却壁设计上存在不足，引起高炉边缘气流发展，操作炉型不合理，炉况不顺；7号高炉炉底温度偏高是炉底炭砖渗铁造成的，6号高炉炉底温度偏高是炉底串煤气所致；7号高炉铁口失常的主要原因是铁口组合砖损坏严重和该部位炉壳开裂。

In order to study the double bottom fermentation under solid conditions, the technique of yellow water closure was applied to make bottom grains not steeping by yellow water, to make yellow water flow smoothly without passing bottom grains and to make the quality of bottom grains not affecting by yellow water.

研究固态条件下的双轮底发酵，我们采取截流黄水的方法，使黄水不浸泡双轮底糟和在滴窖时不经过双轮底糟就能顺利滴出，双轮底糟的质量不受到黄水的瓜分和影响。

Refer to the research findings of CHengDu Research Institute of Geosciences and Minerals(1990) and Nanjing Research Institute of Geography and Lake of Chinese Academy of Sciences(1989), according to the Guidebook of China Stratum(2000), the chronostratigraphy of Kunming Basin is divided into 4 age: the bottom of the Quaternary corresponding to M/G Boundary, age is 2.6Ma;the Bottom of the Mid-Pleistocene corresponding to B/M Boundary, age is 0.78Ma;the Bottom of the Upper-Pleistocene corresponding to the Blake event, age is 0.128Ma;the Bottom of the Holocene corresponding to the Gothenburg event,age is 0.012Ma.

本次研究获得了大量的测年数据，参考成都地质矿产研究所(1990)及中科院南京地理与湖泊研究所(1989)等的研究成果，按照中国地层指南(2000)的方案，厘定了昆明盆地第四纪年代地层划分：第四系底界对应古地磁松山反向期与高斯正向期界线处，年龄为2.6Ma；更新统中部底界对应古地磁布容正向期与松山反向期界线，年龄为0.78Ma；更新统上部底界对应古地磁布莱克事件附近，年龄约0.128Ma：全新统底界对应古地磁哥德堡事件附近，年龄约0.012ma。

Wraps the bottom is a ring, the jacketed wall to the upward contraction tube, the tube cavity cross section diameter is equal to or be smaller than inward wraps the thermos pot bottom diameter, the jacketed wall upward pinch-out, interacts the part in a set of bottom and the jacketed wall, digs out some inclined half circular slot, wraps on the bottom to open 2-4 reservation spiral nail hole.

套底为一个圆环，套壁为向内向上收缩的筒，筒腔断面直径等于或小于所套热水壶壶底直径，套壁向上尖灭，在套底与套壁交结的部分，挖出一些倾斜的半圆槽，套底上开2—4个预留螺钉孔。

Although business mark now is divided into again and can compete and can'ts compete two of expenses, these two part of expenseses is according to nation of certainly sum and take the fee system to carry on the calculating, while announce bidding result, owner and bid the square is according to same diagram paper, same settle sum, take the fee standard and fee rates to do a mark bottom and bid to quote, then mark the bottom and offers press certain way to integrate judges and decide the mark mark bottom, judging and decide the business mark, each bid square make to near to most to judge and decide the mark in the offer mark a square business of the bottom mark get a goal tallest, most probably in mark.

虽然商务标现在又分为可竞争和不可竞争费用两部，但这两部分费用是按照国家的定额和取费制度进行计算的，在开标时，业主和投标方按照同一图纸、同一定额、取费标准及费率做出标底和投标报价，然后把标底和报价按一定方式整合得出评标标底，评商务标时，各投标方所作报价中最接近评标标底的一方商务标得分最高，最有可能中标。

【tumbler cup, cup, Beibi and bottom of the cup cylindrical arc connected, characterized by: the bottom of the cup body of the Ministry for the thickening of the circular arc bottom, cup light body within the space under the heavy weight concentrated in the bottom of the center ...

不倒翁杯，杯口、杯壁和杯底呈圆弧形连接，其特征是：杯体底部为加厚的圆弧底部，杯体上轻下重内空，重量集中于底部中心。。。。

The conclusions can be drawn through numerical simulation: The hydrate-forming region becomes small with increasing circulation rate and inhibiter concentration, and it is possible to make the hydrate-forming region away from sea floor by increasing circulation rate and inhibiter concentration, thus preventing blowout preventer lines from hydrate plugging; the decrease in gas volume fraction in the annulus due to hydrate formation reduces pit gain, which can delay the detection of well kick; the possibility of hydrate presence at a relatively low gas production rate is much greater than that at a relatively higher production rate; the bottom hole pressure is affected little by hydrate phase transition, and it is allowable not to consider hydrate phase transition when the bottom hole pressure is calculated; shut-in casing pressure cann't truly reflect gas kick due to hydrate formation and the situation is getting worse with time

模拟计算结果表明：溢流期间，天然气水合物的生成区域会随着循环流量的增大或抑制剂浓度的提高而减小，可通过增大流量和抑制剂浓度使水合物的生成区域脱离海底，减小防喷器管线被堵塞的危险；水合物的生成使环空中气体体积分数降低，泥浆池增量减小，给溢流检测带来延迟；当检测到有气侵发生时，水合物藏分解速率比较小时，井筒中生成水合物的可能性要比分解速率大的情况下更为严重；水合物相变对井底压力的影响较小，在工程中计算井底压力时可以忽略；由于天然气水合物的生成使得关井套压值不能真实反应气侵情况，而且随着时间的增加情况会更加严重。

This is the inheritance of the tribe of the children of Issachar according to their families, the cities and their villages.

19：23 这些城并属城的村庄就是以萨迦支派按着宗族所得的地业。

I've have enough of your garbage.

我听了你的废话。