Its good water tightness makes it leak free. Good mechanical performance enables the ceiling to cushion exterior impact and bear a weight as much as 100kg.
由于其良好的机械性能使天花能减缓外力冲击，承载100公斤以上的重量。
Mechanical factors effecting on the vibration noise and resonance performance of IR detector were analyzed for the method of impact excitation using a hammer.
采用锤击法，利用冲击激励的宽频特性，研究了金属结构红外探测器的共振特性及影响振动噪声的力学因素。
High strength galvanized steel is widely used in vehicle body and safety part manufacture for well mechanical performance, erosive - resistant performance and impact-resistant performance.
高强度镀锌钢具有良好的机械性能、耐蚀性能和抗冲撞性能，因而被广泛应用在汽车车身及安全件制造上。
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