1. The joint pontes of the front undercarriage of an aircraft is a fatigue critical part, its fatigue life has to be estimated exactly.
某型飞机前起落架后接头连接区为疲劳危险部位，必须准确地估计疲劳寿命。
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2. This article describes the process, equipment, operating performance and pontes for attention for adding heater and protective device for traditional low-pressure shifting furnace.
简要介绍了传统低变炉增设开工加热器和保护器工艺、设备、运行优点及注意事项。
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3. This article describes the process, equipment, operating performance and pontes for attention for adding heater and protective device for traditional low-pressure shifting furnace.
