Research on aero-engine turnover number and controlling method;
航空发动机周转量计算与控制
Effect of long-term fertilization on the content and turnover of soil microbial biomass P;
长期不同施肥对棕壤微生物量磷及其周转的影响
A Review of Researches and Methods for Fine-root Production and Turnover of Trees;
树木细根生产与周转研究及方法评述
The strengths and weaknesses of a mould for reusable container with sliding block at movable and fixed half were discussed.
论述了传统的周转箱模具滑块设在动模及定模的优缺点,介绍了周转箱模具滑块设在定模的关键技术要求和设计要点以及滑块位置动作分解和分析,实践证明,模具滑块设在定模可以使产品取出方便,提高了生产效率,减轻了劳动强度。