The regulating valve is a very important component in the control system of oil pipeline , and its flow property will affect the control level.

调节阀是输油管道控制系统的重要组成部分，其流量特性对控制质量影响很大。

youdao

The construction of underground pipeline network information system is rapidly improved now, but the level of supervision remains low and unchanged.

地下管网信息系统建设在国内正处于快速增长的态势之中，但是监理的水平和技术却相对停滞。

youdao

First, with object-oriented thought, we divide the underground pipeline system level to clarify the pipe system hierarchy and rend different level category pipeline data.

首先，根据面向对象的思想，划分地下管线系统层次，理清管线系统数据间的关系，并对管线系统的数据进行分层渲染；

youdao

Our educational system at the K-12 level does not adequately prepare enough students with needed proficiencies in STEM, resulting in an insufficient pipeline of kids enthusiastic about and equipped to pursue scientific and technological fields at the collegiate level.

FORBES: Do Americans Have 21st Century Job Skills?