From the perspective of convex pipe stress in the cap from hemispherical tube cap.

从受力角度看凸形管帽中从半球形管帽。

youdao

Tube cap in the situation of low pressure, remove maintenance, high pressure situation general don't tube cap.

用管帽一般在压力较低的情况下，便于拆卸检修，高中压情况下一般不用管帽。

youdao

Cover in the specific operation tube cap generated during the important role and contribution to the use of specific important changes and performance, the use of good performance.

管帽在具体的操作过程中产生重要的作用和贡献，能够在具体的使用中产生重要的变化和性能，发挥良好的使用操作性能。

youdao

Among the benefits promised under the new arrangement are a new tube line, a cap on fares, more late-night trains and air conditioning to prevent sweltering summertime conditions.

BBC: Tories propose tube sell-off

The wraparound labels on conventional round bottles were difficult to read, so she designed a flat tube-shaped container that stood upright on its cap, with plenty of room for a large, flat label that could be read easily at a glance.

WSJ: When Simplicity Is the Solution