... 钟罩式气体流量标准装置, Bell-jar Type Gas Flow Rate Standard of Measurement 体积管, Volume Pipe 膜式煤气表, Diaphragm Gas Meter ...
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The method is also applicable for volume pipe of other type.
此方法也适用于其它类型的体积管。
Standard volume pipe used for flow meter's calibration shall be calibrated every three years by metering calibration department.
用于检定流量计的标准体积管每三年要由计量检定部门检定一次。
Although they have insulation layer, but if the temperature is too low, it may be in the pipes freeze water, water becomes ice volume increases, is likely to be the pipe donglie.
虽然它们有保温层，但如果温度过低，也可能将管子里的水冻上，水变成冰体积增大，很有可能将管子冻裂。
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