The complexity of ground feature has put new requirement on mountain drill's reliability, adaptation and portability.
复杂的地形地质条件对山地钻机在可靠性、适应性及轻便性等各个方面都有了新的要求。
The complexity of ground feature has put new requirement on mountain drill's reliability, adaptation and portability.
复杂的地形地质条件对山地钻机在可靠性、适应性及轻便性等各个方面都有了新的要求。
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