The tank shall have extruded magnesium anode rods installed in separate head couplings and extended to within three inches (76mm) of the bottom.是什么意思_The tank shall have extruded magnesium anode rods installed in separate head couplings and extended to within three inches (76mm) of the bottom.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句