Objective To study the influence of excision of sacrum through the superior and inferior margins of the 1st to 3rd posterior sacral foramina on area of sacroiliac joint surface.
目的研究经第1~3骶后孔上、下缘水平切除骶骨对骶髂关节面面积的影响。
Addition of chamfering shape on seating surface of joint bolt at atf cooler pipe area.
棱 增加物的塑造在自动制冷管的范围内、接头螺栓的座套表面。
The Steel Finger type expansion joint system shall seal the deck surface, gutters and curbs in accordance with the plans and prevent water from seeping through the joint area.
钢梭型伸缩缝系统按照平面图对道路表面、路槽及路缘进行密封，防止水渗流通过缝隙区域。
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