他采用预制好的袋子来进行包装，可以避免因制袋而影响下料的矛盾。
He adopted a good bag to carry out pre-packaged, avoid the bag while under the influence of material contradictions.
针对研究新型低应力精密下料系统时，需要获得热应力预制V型槽尖端理想裂纹方法的有效性问题。
To investigate a new type of low stress precision cropping system, it is necessary to obtain the feasibility that the heat stress was used to prefabricate the ideal crack of V-shaped notch tip.
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