| 释义 |
dry test meter dry test meter[′drī ¦test ‚mēd·ər] (engineering) Gas-flow rate meter with two compartments separated by a movable diaphragm which is connected to a series of gears that actuate a dial; when one chamber is full, a valve switches to the other, empty chamber; used to measure household gas-flow rates and to calibrate flow-measurement instruments. |