亚临界热处理对40SiMnCrNiMo高强度钎钢组织和性能的影响
아림계열처리대40SiMnCrNiMo고강도천강조직화성능적영향
Effect of Subcritical Treatment on Structure and Properties of High Strength Steel 40SiMnCrNiMo for Rock Drill Tools
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