The effect of specimen type, thickness, dimension ratio, and notch sharpness on fracture toughness of a carbon rail steel was examined.
研究了试样类型、试样厚度、比例试样尺寸及切口尖度等因素对普碳轨钢断裂韧性的影响。
When propane gas cutting low carbon steel plate, the cost varies with the thickness of the steel plate.
用于低碳钢板气割时，气割成本随板厚不同而变化。
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