The trap is commonly used for floats, thermal power, free - float, double - metal - style , pulse, and so on - bell - shaped float. 常用的疏水阀有浮桶式 、 热动力式 、 自由浮球 式 、 双金属片式、脉冲式 、 钟形浮子式等.
这位战士抓住一条非常结实的绳子很快地向高处爬去.The soldier climbed very quickly catching on a very strong rope.剧场: 沿墙分布的防水地灯照亮墙面,光线由墙的根部向高处扩散,使其渐渐隐逝在黑暗中.Theater: waterproof floor lamps along the walls lighten the surfaces of walls.大家欢快地踏上了那条向高...
He carefully surveyed the ridges and knolls once more , and also the ravines and gullies.他又注意地巡视着那些梁和峁, 还有沟和壑....ravines with foaming rivers rushing through them.泛着白沫的河水奔腾而过的沟壑They jumped ravines, they slid down cliffs.他...