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。
Wipe the surface very thick, use high-grade cement mortar, high strength, this is wrong.
面层抹得很厚，用上高标号水泥，高强度砂浆，这就错了。
Wipe the surface very thick, use high-grade cement mortar, high strength, this is wrong.
面层抹得很厚，用上高标号水泥，高强度砂浆，这就错了。
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