单词：double-wall drill pipe
单词：double-wall drill pipe 相关文章
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A: Thank you for coming. B: Youre welcome. Whats the problem? A: I have a leaky pipe. B: Where exactly is the pipe? A: The pipe is behind a wall in my bathroom. B: How long has the pipe been leaking? A: It began leaking a couple of days ago. B: I mus
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A: Thank you for coming. B: You're welcome. What's the problem? A: I have a leaky pipe. B: Where exactly is the pipe? A: The pipe is behind a wall in my bathroom. B: How long has the pipe been leaking? A: It began leaking a couple of days ago. B: I m
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