pre-hardened plastic die steel 预硬塑料模具钢
pre-hardened plastic die steels 预硬型塑料模具钢
Pre-hardened Plastic Mould Steels 预硬化塑料模具钢
It also states their cause and prevention measures as well as the treatment of hardened plastic concrete cracks.
它们的成因和防范措施以及对已硬化塑性混凝土裂缝的处理。
The results show that the pre-hardened plastic-mould steel belongs to a little low machinability steel because of much hard inclusion existing in microstructure and its high strength and hardness.
结果表明，这类材料属较难加工材料，这主要是由于钢中存在大量硬质点，且材料具有较高强度和硬度所致。
The material in the large plastic zone has been hardened .
在大塑性区内材料已经硬化。
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