另外，指示发光二极管提供不间断的信号强度信息，提供快速和简单的故障排除-提供安装和维修双向的成本节约。
Plus, the indication LEDs provide continuous signal strength information, offering quick and simple troubleshooting - providing cost savings both during installation and maintenance.
疲劳过程中主裂纹的形成消耗了大部分的疲劳寿命，一旦主裂纹形成就快速扩展瞬间断裂。
During the fatigue process, the formation of the main crack expends most of the whole fatigue life, and once the main crack forms, the crack propagates rapidly and fractures immediately.
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