By this method the accuracy and speed of the rough cutting processing can be improved. The efficiency of the die adaptive nc rough machining based on stratifying method is increased.
应用该方法可以减少粗加工余量，提高粗加工精度和速度，提高了层切法模具零件数控粗加工效率。
Method To carry out the comprehensive investigation on the medical quality of 24 different level hospitals in this area, which selected by stratifying sampling.
方法：采用分层抽样调查方法，对本区域24所不同级别医院的医疗质量进行全面调查。
The characterization and evaluation method of the self- stratifying coating film are discussed.
讨论了涂膜的表征和评价方法；
The characterization and evaluation method of the self- stratifying coating film are discussed.
讨论了涂膜的表征和评价方法；
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