a valve worked by a narrow pointed rod fitting into a conical seating.
| 单词 | θ214298 |
| 释义 | society > occupation and work > equipment > machine > parts of machines > control(s) > [noun] > valve > needle (2) needle valve1886 a valve worked by a narrow pointed rod fitting into a conical seating. pin valve1903 = needle valve n. at needle, n. compounds 2. |
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