The shearer's rangingarm is a multi-body system and the load characteristic is very complicated, so it brings many difficulties to research dynamic property with traditional computational method.
采煤机截割部是一个复杂的多体系统，其负载特性非常复杂，采用传统的计算方法研究其动态特性非常困难。
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The wide-ranging supportive measures will certainly give the auto industry a shot in the arm.