双重星系或天体系统，用动力学方法测定其质量时，观测到的视向速度和距离间距，都是各自值的投影值，可用统计方法，求出一个关于它们的平均投影因子。
Both of the observed radial velocity and separation being projective values, in order to determine the mass of binary galaxies the average projection factor may be derived by a statistical method.
并按质量标准研究的技术要求，对药材及制剂进行了系统的鉴别、检查、浸出物测定及含量测定等项研究。
According to the technical demands of quality standard of new drug, the author has studied systematic identification test of extraction and content assay of Rhiroma Menipermi.
该系统能快速测定型砂的有效粘土含量和含水量，实现型砂质量的直接控制。
The system can test active clay content and moisture of green sand fast and control its composition directly.
目的对含氯消毒剂中有效氯含量测量不确定度进行系统研究，为有效氯含量测定的质量控制提供依据。
Objective Systematic uncertainty study of valid chlorine measurement in chlorine disinfectant were made so as to improve quality control of valid chlorine measurement.
文章最后指出基于调制传递函数(MTF)测定并结合人眼视觉系统(HVS)模型的影像质量评价方法有望成为解决影像质量评价难题的突破点。
At last, it is presented that image quality assessment method combined modulation transfer function (MTF) with human visual system (HVS) may be a new breakthrough to solve the image quality problem.
解舒张力测试系统主要用于煮茧质量的检测，本文根据该系统在不同工艺条件下对煮熟茧离解张力的测定数据，论述了系统应用的可行性与适用范围，该系统的应用和完善。
By analyzing a group of data obtained from testing associating tension of cooked cocoons under different technical conditions, the author presents the application feasibility and scope of the system.
同时，对本品质量标准项目的制订进行了系统研究，制订了鉴别和含量测定等项目，可全面制约本品的内在质量。
At the same time, quality standard has been researched systematically, and the methods of identification and determination has been founded, which can control the overall quality of the preparation.
同时，对本品质量标准项目的制订进行了系统研究，制订了鉴别和含量测定等项目，可全面制约本品的内在质量。
At the same time, quality standard has been researched systematically, and the methods of identification and determination has been founded, which can control the overall quality of the preparation.
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