close the upper pipe ram造句

"close the upper pipe ram"是什么意思

造句与例句手机版

Close the upper pipe ram and open the kill line valve
关上部钻杆闸板防喷器，开压井管线阀。
Close the upper pipe ram
关上部钻杆闸板防喷器
It's difficult to see close the upper pipe ram in a sentence. 用close the upper pipe ram造句挺难的

相邻词汇

用"close the ranks"造句, 用"close the rear"造句, 用"close the switch"造句, 用"close the title"造句, 用"close the training"造句, 用"close the window"造句, 用"close theatre"造句, 用"close their doors"造句, 用"close their ears"造句,

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