1) seal up empty sheel
四周密封内空腔
2) cavity sealing
空腔密封
3) sealing cavity
密封腔
1.
The sealing principle of sealing cavity in single thread twin screw pump is the same as that in double thread twin screw pump.
单头双螺杆泵与双头双螺杆泵密封腔的密封原理相同。
4) seal cavity
密封腔
5) sealed box
密封腔体
1.
The respiration effect of sealed box is gradually realized.
密封腔体的呼吸效应逐渐被人们所认识,在露天情况下,密封腔体一旦出现小孔和缝隙,腔体内很快就会积水。
补充资料：四周围
1.口语。犹周围。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条