壳套的英文

covering

valve jacket

valve mantle

valve mentle

• 壳:    shell; hard surfac ...
• 打无壳套舂:    uncased piling
• 大陆壳套:    continental crust ...

例句与用法

1. 9b lead in lead - bronze bearing shells and bushes
   铅-青铜轴承壳套和衬套中的铅。
2. The rolls are equipped with smooth shells and are driven individually and directly in counter - rotation
   轧辊有着光滑的壳套，而且能彼此相向地驱动。