The paper listed the common error in mechanical property test of PC steel products.
分析、例举了预应力钢材力学性能试验中常见的误差!
Officials still think mechanical or human error may also have been a factor.
官员还认为机械和人为的因素也是原因之一。
Perfect mechanical safety interlocking and error operation automatic alarm.
完善的机械安全联锁及误操作自动告警。
Perfect mechanical safety interlocking and error operation automatic alarm.
完善的机械安全联锁及误操作自动告警。
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