stop check valve;non-return valve是什么意思

用法例句

Introduced a cutting-bending die using on the automatic metal plate machining line,the die structure was simple,working stably and reliably.

介绍了一种用于冷柜门体外壳全自动生产钣金线,能够依次完成切断和折弯两道工序的模具;该模具结构简单,工作过程稳定、可靠,制造成本低廉,生产效率高。

Development of a New Spin Cutting Machine;

介绍了一种新型旋压切断机床。

Structural design of square tube cutting equipment by applying punching technology;

应用冲压技术进行方管切断加工的装备结构设计

A description is made on a structure and operating principle of the progressive die for grooving and cut-off of junction pole.

论述了用在通用冲床上的接线柱自动送料、切槽、切断级进模的结构形式、工作过程,提出了确定压料滚珠直径的方法。

In this paper,The reasonable approaches of organic synthesis have been designed to use analytic and examinatorial program by means of corey's concept of synthon and disconnection,in the meantime ,some common synthetic tactics have been suggested.

本文以Corey的合成子和切断为手段,利用分析程序和审查程序对有机反应路线进行合理设计,并提出了一些常用的合成策略。

With the study of battery discharge features in base stations,after the analysis on the disconnection device for step loads classified by voltage and duration, the article believes the setup of this device exists abuse which might be harmful for battery operation and shorten its life time.

结合基站蓄电池放电特性,文章首先对基站电源采用电压和时间分级负载切断脱扣装置进行分析,认为其设置方法存在一些弊端,会对蓄电池实际运行带来不利影响,缩短了电池使用寿命。

japonica clones which had undergone interconnection and disconnection treatments grew in four types of habitats whose overall soil nitrogen levels showed a gradient.

结缕草被栽植于4种类型的“生境”内(它们的总体土壤氮素资源水平呈现梯度变化),并同时对匍匐茎的节间实施连接与切断2种处理。