shaft mouth 中文意思是什麼
shaft mouth
解釋
豎井口-
With one hand gripping the base of the shaft, make one smooth movement by sliding your ( very wet ) mouth over his erection, taking him as far into your mouth as is comfortable
用一隻手抓住柱子的底端,潮濕地嘴流暢地滑下去,在能承受地前提下,盡可能含深一點。 -
Brief analysis on roof gas accident in a multi - shaft - mouth zoned bottom airway and its preventive measure
多井口分區式井底進風大巷高頂瓦斯事故淺析及防範措施 -
Discussion on application of dcs technology in shaft mouth power plant
應用於坑口電站的探討
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