英语词汇“pilot tunnel”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典-现代词典

单词	pilot tunnel
释义	pilot tunnel pilot tunnel [′pī·lət ‚tən·əl] (engineering) A small tunnel or shaft excavated in advance of the main drivage in mining and tunnel building to gain information about the ground, create a free face, and thus simplify the blasting operations.
随便看	marchers marches marchesa marches against marchesani marchesani, oswald marchesani syndrome marchesa ossoli marchese marchese di monferrato marchese marconi guglielmo marchese marconi, guglielmo marcheshvan marcheshvon marchesi marchesi di monferrato marchesi, mathilde marches in step marches in step with marches in time marches of ancona marches on marches out of step marches out of step with marches out of time

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