... purity 纯化，纯度 purity coil 色纯度调整线圈 purity control 纯度控制 ...
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... oxygen purity 氧的纯度 purity coil 纯度控制线圈,纯度调... apparent purity 表观纯度 ...
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color purity coil 色纯度控制线圈
colour purity coil 色纯度控制线圈
·2,447,543篇论文数据，部分数据来源于NoteExpress
The factors affecting fatigue life of coiled steel springs for bogies are expounded from such aspects as purity of raw material, surface quality, spring corrosion and structure of end coil.
从原材料纯度、表面质量、弹簧腐蚀及端圈结构等几个方面阐述了影响转向架钢制螺旋弹簧疲劳寿命的因素。
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