This paper describes six practical working models of gravity cage and evaluates the flow velocity of the inner point and outer back point of the cage net under the condition of pure current.
设计了六种重力式网箱的模型，在单纯流条件下，通过模型试验测试了网箱网内与网后的流速。
Derive a way to get the point estimations of parameters under normal working condition stress.
给出了求正常工作应力下参数点估计的方法。
Whether sensors of the limiter can timely and reliably reflect the real working condition of the crane is the key point of its correct functioning.
传感器能否适时、可靠地反映起重机的工作情况，是力矩限制器能否正确工作的关键。
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