Factors affecting constant pressure difference control method and advantages and disadvantages of the control plan are analyzed theoretically through pipe system head curve and pump performance curve.

根据管道水力特性曲线与水泵的性能曲线，运用理论分析的方法，对影响末端定压差控制方式的因素和该控制方案的利弊进行了分析。

youdao

A database involving 50 images of human face is built up by this system. Head outline and feature points of human face can be effectively achieved by this method, as shown by experimental results.

本系统建了一个包含50个人脸图象的数据库，实验结果表明这种方法可以有效地获取头部轮廓和人脸特征点。

youdao

The head of the center's office dealing with the nervous system said nobody else knew about it,either.

VOA: special.2010.05.04

Rather, what happened is you heard English and--but the capacity grew in your head and something a lot more similar to the development of arms or legs or a visual system.

相反,你听到了英语,你脑中的英语能力得到增长,这个和手臂,下肢,或是视觉系统的发育很相似

耶鲁公开课 - 心理学导论课程节选

The head of Raptorex Kriegsteini shows evidence of a well-developed olfactory system.

VOA: special.2009.10.13

The union also claims that there has not been enough testing of the IT system which head teachers say will be "essential" to the Diplomas.

BBC: Heads demand answers on Diplomas

The eye tracking system supports leading head and motion tracking technologies such as A.R.

ENGADGET: SMI Eye-Tracking 3D Glasses use rim-based cameras to adjust perspective

Instead of building cars for stock, he is turning the production system on its head.

ECONOMIST: General Motors and Fiat