标准螺母
place a standard nut on the screw and tighten it down securely.
放置一个标准的螺丝和螺母拧紧了安全。
Methods In the course of standard revision, research workers studied 86 edible areca-nut's samples, and they made a detailed record of glucide and fluorine content's eligible ratio.
方法在标准修订过程中,标准修订研究组对86件槟榔样品进行修订前后糖精钠、氟含量符标率的统计。
Hexagon bolts and nuts, hexagon socket head cap screws, thread bar, carriage bolts, Nylon lock hex nut, flat washer, fish bolt set, standard fasteners etc.
六角螺母,六角螺栓,自攻钉,牙棒等。非标件生产与出口。
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