an instrument used for testing the accuracy of a spirit level, consisting of a stand equipped with an adjustable mount which is used to incline the…
| 单词 | θ212504 |
| 释义 | society > occupation and work > equipment > equipment for marking out work > [noun] > level > instrument for testing (1) bubble trier1799 an instrument used for testing the accuracy of a spirit level, consisting of a stand equipped with an adjustable mount which is used to incline the… |
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