The internal plug-type metering valve is an integral part of the steam separator and is completely steam-jacketed to prevent condensation through radiation.

内置式柱塞定量阀是汽―水分离室整体的一部分，完全被蒸汽包围，从而避免了因热辐射造成的冷凝。

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By sowing disc and plug transmission automatic control and current feedback control of pneumatic metering components, for seed high accuracy, high efficiency automatic seeding.

通过对播种盘和穴盘输送自动控制以及气力排种元件的电流反馈控制，实现了播种器高精度、高效率自动播种。

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"This could easily degenerate into chaos, " concedes Paul Heitman, a senior program architect at Comverge, which hopes to extend its metering expertise for air-conditioning systems to plug-in cars.

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