取样

The authors studied carefully two numerical differential methods, finite difference method and rational polynomial technique, and pointed that FDM is the special ease of RPT when the limit state function is linear. Accordingly, FDM3 can be used for the continuous linear limit state function and RPT5 for the continuous nonlinear limit state function. For the discontinuous limit state function, RPT should be used because of the large error of FDM.

对于可靠度分析中常用的有限差分法及有理多项式法这两种数值微分方法，本文详细研究了二者间的异同及其求导结果与步长的关系，指出了对于相同的步长控制系数及取样方式，FDM是RPT在线性情况下的特例；对于连续的线性功能函数，可直接用3点FDM求导；对于连续的非线性功能函数，可用5点RPT求导；对于非连续的功能函数，应采用RPT求导。

Time Inter-plug circuit is the key module of random sample DSO. It can improve the equivalent sample rate and horizontal time discrimination of DSO efficiently.

时间内插电路是随机取样数字存储示波器的关键电路，能有效提高数字存储示波器的等效采样速率和水平扫描时间分辨率。

Medicine and industry equipment Main Products include: induction hand sterilizer, clarity detector, automatic Polarimeter instructions, tablet hardness tester, high performance liquid chromatography, drug melting point instrument, electric thermostatic incubator series, binocular biological microscope, rapid moisture meter, Pointer Wen hygrometer, digital hygrometer temperature, planktonic bacteria sampler, high efficiency air filters, ozone sterilization cabinet, ozone generator, Rat ultrasonic drive device , a variety of fly disinfestation lamp, micro-pressure device, oblique tube pressure table, desktop dust particle counter, mobile sampling vehicle, dehumidifiers, according to meter, anemometer, the volume of dollars, a variety of fly disinfestation lamp, vacuum cleaner water , induction faucet, clean transfer window, automatic hand dryers, automatic; manually to Soap Dispenser, Clean Benches, electronics such as Taiwan, said.

医药及行业设备主打产品包括：感应式手消毒器、澄明度检测仪、自动指示旋光仪、片剂硬度测定仪、高效液相色谱仪、药物熔点仪、电热恒温培养箱系列、双目生物显微镜、水分快速测定仪、指针式温湿度计、数显温湿度计、浮游菌采样器、高效空气过滤器、臭氧灭菌柜、臭氧发生器、超声波驱鼠器、多种灭蝇灯、微压差仪、斜管式压差表、台式尘埃粒子计数器、流动取样车、除湿机、照度计、风速计、音量计、多种灭蝇灯、吸水吸尘器、感应式水龙头、洁净传递窗、全自动干手机、自动；手动给皂器、超净工作台、电子台称等。

In order to study the near-surface permafrost distribution space, field survey and sampling method are used to study the issue.

为了研究近地表面多年冻土的空间分布规律，采用野外调查、取样方法对该问题进行研究。

The bigger top tension will cause the wellhead to be over-pulled and increase the probability of wellhead collapse. As the mean drifting of drilling vessel or platform increases, the wellhead displacement and bending moment nearly linear enlarges. The greater current velocity may result in wellhead instability because of its limited bearing moment capacity. Therefore the drifting control is very important to subsea wellhead stability. The wellhead stability may be improved by taking measures such as enhancing the conductor bending strength, controlling scour depth on seabed, getting geological data sampling of shallow formations.

算例分析表明，水下井口的横向偏移及弯矩随张力比和海流流速的增加而大幅增大，顶张力过大会引起井口稳定性变差；随着钻井船或平台漂移量的增加，井口的横向偏移和弯矩近似线性增加，控制好钻井船或平台的漂移非常重要；由于井口承受弯矩的能力有限，较大海流流速情况下可能造成井口失稳；提高导管抗弯强度、控制泥线处管柱冲刷、获取浅部地层的取样数据等措施可以增强井口稳定性。

The system consists of a conventional dynamometer and a dilution bag.

该系统主要由普通测功机和微粒稀释取样袋组成。

The eclosion dates of offspring are not related to their parents with regard to the 2 peaks. There was an corresponding shift in eclosion days in eggs fertilized 2 days apart. It suggested that circasemilunar eclosion times were not caused by cues in the laboratory.

相隔两天取样的卵块，在实验室中并没有在月内同步羽化的现象，显示在实验室中两个高峰间隔约15天，并不是受到饲养环境中某些因子的提示，而使得羽化呈现相似的间隔天数。

The effective resistance is the parallel combination of the source resistance and the feedback sensing resistance.

有效电阻为源电阻和反馈取样电阻的并联组合。

But it could perhaps be used for local electoral districts.

但在当地的选举中这些取样还是有效的。

A cross-sectional survey-interview with structured questionnaires was used for data collection. The abused women were recruited from the family violence prevention centers, emergency department of University Medical Center and district hospital, outpatient of family medicine department of a district hospital in Kaohsiung city, 127 subjects were contacted to participate in this study and 109 subjects (85.8%) completed the questionnaires.

研究设计为横断式调查法，以立意取样的方式在高雄市和高雄县家暴中心、一家医学中心和一家区域医院急诊、以及一家区域医院家庭医学科门诊，选取受虐妇女为研究对象，共选取127人，有效样本为109人，完成率为85.8 %。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。