fillet welds短语⁹⁰⁸⁸⁷⁺⁷ 基本例句 换热管-管扳焊接接头 Butt welds qualify full and partial penetration butt welds and fillet welds. Fillet weld tests shall be required where this is the predominant form of production welding. 对焊应证明全焊透和部分焊透的对焊和角焊合格。如果角焊为焊接生产的主要形式时，应进行角焊试验。 cadjy