Clinical trials take a long time because they're rigorously controlled, with close attention paid to sampling bias and methodology.
临床试验需要花费很长时间，因为它们处于严格控制之下，必须密切留意取样偏差与方法。
Sampling rate conversion methods of integral ratio, fractional ratio, and NCO controlled positive real ratio are investigated.
文中分析了整数倍、分数倍和NCO控制的正实数倍的采样率变换方法。
The sampling density can be controlled according to the practical requirement during the course of contour line vector.
在等高线的矢量化过程中，可根据实际需要对采样密度进行控制。
The unit which consisted of two peristaltic pumps and a multi function sampling valve was controlled by a single chip microprocessor.
该仪器采用二泵一阀系统，由单片机控制，具有双路信号实时采集和数据处理功能。
RESULTS&CONCLUSION:The current drug sampling test method is far from perfect and by which the quality of drugs was unable to be effectively controlled.
结果与结论我国现行药品抽样检验存在缺陷，不能有效控制药品质量；
The sampling system is controlled by an adjustable program timer or by a manual pushbutton.
取样系统用可调程序定时器或手动操作的按纽控制。
Then, the thesis discussed the proceeding of the simulating channel part, digitally sampling module, FPGA logically controlled module and AD/DA module, including their chips, realization and notice.
接着，分别介绍了模拟通道部分、数字取样模块、FPGA逻辑控制模块及数模转换模块，包括它们的芯片选择、实现方法和注意事项等。
It's controlled by microcomputer with some characteristics, such as operating easy. sampling data exact and intellegence high.
仪器由微电脑控制，具备操作可靠、采样数据准确、智能化程度高特点。
The scanning sampling density crucial to imaging quality can be deliberately controlled by setting of the driving frequencies as well as fetching duration.
扫描采样率对成像质量至关重要，可通过驱动信号的频率选择和图像采集时间的设定来控制。
The sampling speed of one unit can be controlled in 2 seconds , and many use together can reduce error.
单台采样速度可控制在2秒左右，多台同时采样误差较低；
The amount of used reagents and the experimental conditions for sampling volume and coil length were optimized by using the controlled and weighed centroid simplex method.
利用单纯形优化法选择了各种试剂的最佳用量以及采样体积、反应管长的最佳实验条件。
The operation in internal box such as automatic sampling, switching both anion and cation analytical system and automatic reproduction of suppressor is controlled by an automatic system in outer box.
内箱运行由外箱控制自动进样，阴、阳离子双分析系统自动切换，抑制器自动再生。
The sampling chamber is installed with a sampling opening controlled by the sampling valve.
取样腔上设有由取样阀控制的取样口。
The sampling chamber is provided with a sampling opening controlled by the sampling valve.
取样腔上设有由取样阀控制的取样口；
Finally, a choice of 1 out of N potential controlled mutual blocking logical circuits in the form of matrix and a potential controlled auto-sampling circuit have been recommended.
最后，本文提出了一种电位控制的矩阵式，N 中取1的互斥逻辑电路和电位控制的自动取样电路。
DESIGN: Grade sampling, randomized controlled quantitative analysis.
设计：分层抽样，随机分组对照，量效分析。
This bedstand is controlled by a computer to complete the data sampling, processing and display as well as the data storage, thus enhancing the efficiency an…
该试验台由计算机控制，进行数据的实时检测、处理、显示及存储，从而提高了试验的效率和有效性。
Problem for quality is strictly controlled to ensure that each piece of clothing through the quality (rather than sampling).
对于质量问题更是严格把关，保证每件衣服都通过质检(而不是抽检)。
By constructing a test matrix in terms of the sampling period, the plant controlled and the model parameters, we give a sufficient condition to test the asymptotic stability for the system.
针对不存在丢包和存在丢包的情况，通过由采样周期、被控对象与模型参数构造的稳定性判别矩阵给出了使网络控制系统渐近稳定的充分条件。
By constructing a test matrix in terms of the sampling period, the plant controlled and the model parameters, we give a sufficient condition to test the asymptotic stability for the system.
针对不存在丢包和存在丢包的情况，通过由采样周期、被控对象与模型参数构造的稳定性判别矩阵给出了使网络控制系统渐近稳定的充分条件。
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