downcomer用法_例句
downcomer 朗读
downcomer
音标：daʊnˌkʌmə
downcomer翻译
downcomer双语用法和例句
相关单词
deanship duhat doyley dysphoric delegate demerol dapsone dicom demonstrationist delightedly disparage decency dysphonia drupaceous demagnetizer despiritualize demogram dermatoid digtellum dauphinite