Conclusions Compared with traditional auscultation method, gradual withdrawal method can effectively and safely improve the rate of correct ideal anatomic placement of L-DLT.
结论 循序渐退法用于左侧双腔支气管插管，能够显著提高正确到位率。
The current detection method of motorcycle engine abnormal sound is artificial auscultation, which is very subjective and easy to make mistakes.
现行的摩托车发动机异响检测方法为人工听诊，主观性很强，容易出现错判。
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