Methods: Adopt analytic approach of reviewing method, statistic the producing rate lung cancer by four different ways to draw materials including clamp check, brush check, rinse and needle aspiration.

方法：采用回顾性分析法，分别统计钳检、刷检、冲洗及针吸活检4种不同取材方法对肺癌的检出率。

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Use clamp ampere meter to measure the current and check if the heating power is normal.

用钳形表测量电流，检查发热功率是否正常。

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Check if the clamp-sealing torque of packing gland accords with the standard specification.

检验填函盖的钳紧扭矩是否符合标准规格。

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