Objective: In some simple condition, we try to find a cost-effective method to achieve minimal invasive thoracic surgery. Methods: An prospective research with 18 cases was accomplished in minimal invasive thoracotomy group and VATS group. Results: The minimal invasive thoracotomy group showed no inferior to VATS group with respect to operation duration and drainage duration, and the cost dropped obviously. Conclusions: The minimal invasive thoracotomy is feasible in some selective patients.
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The paper analysis the appliance condition of zero inventory and proposal some methods in applying zero inventory, further more, the earnings and risk of applying zero is simple suggested.
本文分析了零库存实施条件的，提出了企业实施零库存的几种方法，并就零库存实施的收益与风险进行了分析。
There are some advantages in the process such as no environmental pollution nearly, simple technology, moderate operating condition, raw material easy to gain, etc.
该工艺具有无环境污染、技术简单、操作条件温和、原料易得等特点。
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