| 单词 | air line |
| 释义 | air line [`er ´līn] ENGINEERING A fault, in the form of an elongated bubble, in glass tubing. Also known as hairline. MECHANICAL ENGINEERING A duct, hose, or pipe that supplies compressed air to a pneumatic tool or piece of equipment. SPECTROSCOPY Lines in a spectrum due to the excitation of air molecules by spark discharges, and not ordinarily present in arc discharges. |
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