It introduces the heat treatment processing for SA540 steel bolt and nut.
本文介绍SA540钢螺丝螺母热处理工艺，因受尺寸因素制约影响，当直径大于100mm时，淬火油冷过程（450℃～550℃）中形成上贝氏体组织。
Study on the Relationship between Submerged Plants and Herbivous Snails;
沉水植物与牧食性螺类的关系研究
Study on Snails which Transmit Parasitic Diseases of Angiostrongylus cantonensis in Yunnan Province
云南省传播广州管圆线虫病的螺类调查研究
automatic packaging for all kinds of packaging
各式螺丝类产品自动包装
"Bolts,screws & nuts"
"螺栓,螺丝及螺帽"
a tool that is fitted into a diestock and used for cutting male (external) screw threads on screws or bolts or pipes or rods.
装在螺丝攻里用来切割螺丝钉、螺栓、管具或棒类的多余的螺旋的工具。
tap(ping) drill
螺丝孔钻，螺丝底孔钻
tap and die set
全套螺丝攻和螺丝板牙
Mounting Bolts (Screws)—IAC Motor
固定螺栓（螺丝）—IAC马达。
hex machine screw nut
机械螺丝用六角螺帽
automotive fasteners
车辆(汽车)螺丝、螺帽
remove the thread (of screws).
去掉（螺丝钉的）螺纹。
hot dip galvanizing bolts and nuts
热浸镀锌螺丝、螺帽
bolt nut and screws heat treatment furnaces
螺丝、螺帽热处理炉
The threads of the screw work hard.
这螺丝的螺纹太涩了。
a woodscrew having its shank bent into a ring.
螺柄制成环状的木螺丝。
fasteners inspection and measurement instruments
螺丝、螺帽品检量测仪器
pepe stock and dies
管子丝攻和螺丝钢板
sunk screw
【机】埋[沉]头螺丝
taps dies and tools
螺丝攻、车刀、模具
To clinch(a bolt, for example).
钉牢（例如螺丝钉）