短语词组短语ballast suction pipe 压载水吸入管;压载舱吸水管;压载系统吸入管;压舱水吸入管ballast branch pipe 压载水支管ballast water pipe inside 压载管内表面ballast water pipe outside 压载管外表面branch ballast pipe [船]压载水支管 返回 ballast pipe