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Case: high grade steel.
表壳：高钢级。
youdao
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For welding low-alloy and high strength steel with corresponding strength grade.
用于相同强度等级的低合金高强钢的焊接。
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High quality of different stainless steel mirror and etching grade.
高品质的不同不锈钢镜面，蚀刻等级。
youdao
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High quality of different stainless steel mirror and etching grade.
高品质的不同不锈钢镜面，蚀刻等级。
youdao