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单词 screw die
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screw die
screw die n. either of the two parts of an internally threaded hollow tool used to cut a screw thread; (in later use) a similar tool made in a single piece; cf. die n.1 6a.
ΚΠ
1839 Repertory Patent Inventions 11 259 When at work, those screw-dies will constantly approach each other, and act to cut a screw, till the levers..come against the stop.
1875 E. H. Knight Amer. Mech. Dict. III. 2629/2 Troll-plate (Machinery), a rotating disk employed to effect the simultaneous convergence or divergence of a number of objects; such as screw-dies in a stock.
1999 Mech. Engin. 121 47/1 SGE mixes heated plastic wastes and mineral filler to produce a homogeneous molten plastic that is extruded from a screw die.
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