metering hole 中文意思是什麼
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Air metering hole
空氣量孔 -
Our new device adopts a new style filling hole and a new filling method that makes the seed filling the hole along the wall of the seed - metering plate, which will assure seeds filling. at the same time, we lay more filling hole in a circle
同時將型孔設計在緊靠排種盤內壁的位置，有利於種子沿排種盤內壁下滑，對準型孔，順利進入型孔，有利於充種率的提高。 -
Study on spring needle device for preventing blockage of the suction hole used in vertical plate precision metering
垂直圓盤精量排種器彈性防堵塞裝置的研究
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