wet-back tile 湿背砖
wet-back boiler 湿背式锅炉
wet-back combustion chamber 湿背式燃烧室
wet back boiler [动力] 湿背式锅炉
full wet-back 全湿背
N-COUNT Wetback is sometimes used to refer to a Mexican or a Mexican-American who has entered the United States illegally in order to work or live there. 湿背人; 指非法进入美国的墨西哥人 [美国英语] [非正式,侮辱]
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