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。
The single well flow metering unit, which is made up of oil meter, recorder, accessories such as pipe and valve and so on, was developed for the oil measurement of single well in series oil Wells.
单井流量计量装置是为解决串联油井的单井量油而研究的，该装置由量油器、记录仪表及管阀附件等组成。
The single unit cap and lifting lever permit manual valve opening (testing) with low required force on the lever.
这种一体式阀盖和提升杆使得检测人员只需轻轻扳起测试杆即可人工手动开启阀门进行测试。
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