The CDF Series air amplifiers generate high output flow using a small volume of compressed air.
CDF系列的空气放大器，使用小量的压缩空气，产生高的输出流量。
Conclusion on the basis of routine ultrasonography, dynamic observation through oral infusion of GI ultrasound contrast medium is a simple, non-invasive and effective method of diagnosing CDF.
结论在常规超声检查的基础上，口服胃肠道超声造影剂动态观察的方法简易可行、无创、准确性较高，是诊断胆囊十二指肠瘘的有效方法。
Conclusion on the basis of routine ultrasonography, dynamic observation through oral infusion of GI ultrasound contrast medium is a simple, non-invasive and effective method of diagnosing CDF.
结论在常规超声检查的基础上，口服胃肠道超声造影剂动态观察的方法简易可行、无创、准确性较高，是诊断胆囊十二指肠瘘的有效方法。
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