alloy element短语¹⁸⁰⁰⁹⁸⁺¹ 基本例句 合金元素 Constant load tensile test was adopted to study the influence of welding material match and alloy element content on SSCC sulfide stress corrosion cracking of domestic pipeline steels. 采用恒载荷拉伸法，测试了国产管线钢母材及其焊接接头的硫化物应力腐蚀开裂 SSCC性能。 dictall