Two crystal forms(α and δ′ form) of nylon 11 were prepared by melting, ice-water bath quenching and annealing.
为进一步认识分子链运动与晶型之间的关系,用熔融、冰水淬火和退火等方法制备了α和δ′两种晶型的尼龙11薄膜试样。
The toughness of the frame and front fork of bicycle has been tested by precooling quenching after the salt bath and braze welding.
本文研究了自行车架和前叉盐浴钎焊后预冷淬火强火。
Immediate quenching and tempering process of steel T 10 after low temperature salt bath chromizing was studied.
研究了T10钢在低温盐浴渗铬后直接淬火并回火工艺.
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