For watertight bulkheads, how do you check the watertightness?
就水密舱壁而言，怎样检查其水密性？
2
In this paper, the design of planar antenna feed system of high-speed mobile radar and a test method for watertightness are presented.
论述了高机动雷达平面阵列天线馈电系统的水密性设计及试验方法。
3
Watertightness, antisepsis and do not become mildewed, do not living the characteristic of the insect, Can obstructs availably congealed, prevent the piping congelation.