小高

And the market in Hebei, Jiangsu and other places folder emery cloth manufacturers are using cheaper low-count polyesterinto a rough, this polyester yarn, the textile industry known as "small fiber" is a small second-class chemical fiber plant raw materials production, lower elasticity, toughness poor, dark color, integrated quality is not high, woven into a coarse Booker weight of 70 grams / square meters, the price is usually around 20,000 yuan per ton, cost far less than the Lianhua Factory produced thin emery cloth folder.

而市面上河北、江苏等地厂家生产的夹砂布是用较便宜的低支数涤纶粗纱织成，这种涤纶纱，纺织行业内称为&小化纤&，是由小化纤厂用次等化工原料生产，弹力低、韧性差，色泽暗，综合品质不高，织成的夹砂布克重为70克/平方米左右，价格通常为每吨20000元上下，性价比远远低于联华厂所产的薄型夹砂布。

Using the low-thrust propulsion system for the Russian space interceptor as a research object, the mathematical model of the components of the system is employed to analyze the influence of the combustion time lag on the response characteristics of the propulsion system with high-pressure chamber, and to analyze comparatively the computation results of the start and shutdown transients of the lowthrust propulsion system with high and low chamber pressures.

以俄罗斯空间拦截器用的小推力推进系统为研究对象，利用系统各部件的数学模型，分析了燃烧时滞对高压燃烧室推进系统响应特性的影响，对比了小推力高、低室压推进系统起动、关机过程的计算结果。

The finite element method and electro mechano acoustic method are used to analyse the mechanical performance,sensitivity,and frequency response of the condenser microphone .

针对所研制的电容式微传声器在理想模式下的工作原理，建立了有限元分析模型和声电模型，从理论上分析了器件的机械性能、灵敏度以及频响特性，得出了结构优化的设计原则，即要想得到高灵敏度的微传声器器件，必须考虑采用尽可能小的空气隙厚度和声学孔尺寸以及具有较小内应力的声学振膜。

In order to decrease the loss energy, a new kind of sleeve valve of hydraulic impactor is designed. It takes the technical measure of cone valve and optimum unequal polite of valve. The sleeve valve has features of little leakage, little pressure loss and low energy cost.

为了降低能源消耗，研制了一种新型的液压冲击器配油阀，该阀采用锥阀阀口形式和优化的不等阀开口量技术，使配油阀泄漏量小，阀口压力损失小，换向运动能耗低，液压冲击器效率高。

gap by law easy to use, easy to grasp, apply to the relatively high crown boneless resistance, resistance to a small adjacent teeth, the roots for the integration of the root or the root bifurcation cases, such as low lower the removal of impacted wisdom teeth; split crown law Requirements, flexibility in operation, more suitable for medium and low impacted significantly ditch and development, the root fork or a higher resistance to a larger adjacent teeth, and other cases, the lower-third-molar extraction.

结论增隙法操作方便、易于掌握，比较适用于高位、冠部无骨阻力、邻牙阻力小、根部为融合根或根分叉很低等情况下下颌阻生智齿的拔除；劈冠法要求条件高、操作灵活，比较适用于中、低位阻生且发育沟明显、根分叉较高或邻牙阻力较大等情况下下颌阻生智齿的拔除。

The high rotten coal (including the anthracite and meager coal ) radioactive level is relatively low,( 238U: 29.1Bq/kg , 232Th: 25.9Bq/kg , 226Ra: 37.5Bq/kg), obviously lower than the radioactive levels of the brown coal and bituminous coal, and fluctuating range little relatively stable until Lincang uranium germanium colliery HeKai Tian little dragon's pool power plant make , investigate than right far correctly, prove natural radioactive nuclide (238U , 232Th , 226Ra ) than activity transformation in the course of utilizing and give locality radiate influence that environment bring.

高变质煤放射性水平相对较低，（238U：29.1Bq/kg、232Th：25.9Bq/kg、226Ra：37.5Bq/kg），明显低于褐煤和烟煤的放射性水平，且波动范围较小、相对稳定通过对临沧铀锗煤矿田和开远小龙潭电厂作出调查比对，说明了天然放射性核素（238U、232Th、226Ra）比活度在利用过程中的转移以及给当地放射环境带来的影响。

To a higher pouring money down the drain cup, added water, the application of the little finger and ring finger on his left hand caught a high ball glass covered with a small, thumb, index and middle fingers to hold the cup, the cup from under the table-side, the legs of a previous After the water poured into a glass side.

往高杯中倒水、续水，应用左手的小指和无名指夹住高杯盖上的小圆球，用大拇指、食指和中指握住杯把，从桌上端下茶杯，腿一前一后，侧身把水倒入杯中。

The cutting surface quality and its affecting factors of ZA22/Al〓O〓 composites were investigated systematically with hard metal alloy cutter on an engine lathe.

在普通车床上采用硬质合金刀具，首次系统研究了该复合材料的切削加工表面质量及影响因素，发现要获得低的切削加工表面粗糙度应选择小的切削深度、小的刀具进给量及高的切削速度。

Therefore, we designed a porous effervescent atomizer. In this paper, experimental investigations have been conducted on the combustion characteristics of effervescent atomizers, and the experimental data could provide guidance for the designing of atomizers.

气泡雾化喷嘴作为一种新型的雾化喷嘴，具有雾化质量高、耗气量小等特点，因此比较适合用于雾化重、渣油等高粘度液体燃料。

Current understanding of the kinetics of IgE binding to high-affinity receptors on mast cells and basophils is imperfect, but available data suggest that disarming high-affinity receptors on these cells is likely to take weeks rather than hours or days.

目前对IgE与效应细胞表面高亲和力受体结合的动力学状况尚不清楚，但已有的资料表明使这些高亲和力受体失活可能需要几周时间，而不是几个小时或几天。

I can not make it blossom and suits me

我不能让树为我开花

When temperatures are above approximately 80 °C discolouration of the raceways or rolling elements is a frequent feature.

当温度高于 80 °C 左右时，滚道或滚动元件褪色是很常见的特征。