...支架选型；推溜；移架 [gap=1442]Key word: The hydraulic support; hydraulic; four-bar linkage; coal mining; support type choice; push forwards the conveyer; advancing the powered support ..
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Clubs and districts may apply for this type of grant with an international partner, club, or district to support a focus area project of their choice.
扶轮社及地区可支持他们所选择的一个重点范围计划而申请为这类型奖助金的一位国际伙伴的扶轮社或地区。
The advantage of the ducted propeller is, this type propeller can support greater thrust and higher efficiency under low speed, so is the first choice.
导管螺旋桨优势在于低航速时提供更大的推力和更高的推进效率，因此作为首要选择。
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