He often treated his friends badly; butt t hey remained loyal tot he last.
他经常不善待朋友，但朋友们却始终对他忠心耿耿。
All butt, grooved t, and corner joints shall be complete joint penetration weld joints.
所有对接、T型槽和弯管接头都要完全侵入连接到焊接接头上。
All butt, grooved t, and corner joints shall be complete joint penetration weld joints.
所有对接、T型槽和弯管接头都要完全侵入连接到焊接接头上。
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