短語(yǔ)詞組短語(yǔ)Load and safety factor 荷載及安全系數(shù)safety load factor 安全荷載系數(shù);安全負(fù)載因數(shù);安全載荷因數(shù)load factor of safety 安全負(fù)載因數(shù) 返回 load safety factor