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并指出，提高材料抗多冲疲劳的强度将是减少钎头断裤率，延长其使用寿命的有效途径。
It should be pointed out that upgrading the strength of materials to resist multi-shock fatigue is an effective approach to reduce the socket-breakage rate as well as to improve bit's service life.
在开断能力、抗熔焊性、介质恢复强度等电气性能方面均明显优于传统粉末冶金法铜铬触头材料。
The contact has many advantages in breaking capacity, anti-welding behaviour and dielectric recovery strength, compared w…
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