因此间隙啮合技术为低密度低强度材料的弹托设计提供了可行的方法。

So the meshing clearance technique is a feasible method for the sabot design with the materials of low density and low intensity.

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这些材料具有低强度。

These materials exhibit low strength.

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造成材料、配件费用高，故障多，设备使用效率低，增加了工人的劳动强度。

Cause of the high cost of materials, spare parts, equipment failure, low efficiency, increase use the Labour strength of the workers.

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