The new designed valve has metal-metal plane hard airproof structure, using durably grinding material near the flowing road to improve the airproof surface usage life-span.
设计的阀门采用了金属-金属的平面硬密封结构，在流道附近采用耐磨损的材料，提高阀门密封面的磨损寿命。
2
Mercury, the fascinating liquid metal is not the only liquid metal.
水银，这种迷人的液态金属，并不是唯一的液态金属。
3
The word in Hebrew is something that's been beaten out, like a metal worker would hammer out a thin sheet of metal.