介绍了一种全塑料的衣夹模具，该衣夹无需金属弹簧，生产该衣夹成本低又耐用，模具寿命长。
A kind of whole plastic clothes-pin mold is introduced, for this clothes-pin, it needs no metal spring, with low manufacture cost and long using ages, also, the mold has a long working life.
这些有益的实验结果为电铸加工使用寿命长、机械性能好的模具提供了一定的依据。
These useful results provide scientific basis for the electroforming of moulds with long service time and excellent mechanical performances.
试制的新模具，可锻出高精度的增压器动叶片。 新模具在动负荷下工作，具有硬度高、变形小、寿命长的特点。
The new dies developed can forge high-precision rotary blades forsuperchargers and, when working under dynamic loads, have the features of goodhardness, small deformation and long service life.
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