In this paper, the mathematical know ledge in ancient codes and records was investigated on the base of the previous investigation, fraction and fraction operation were discussed emphatically.
本文是在前人研究工作的基础上,进一步探究了先秦典籍中散在的数学知识,重点讨论了分数及其分数的运算。
The heat transfer coefficient of nanofluids increases with increasing the thermal conductivity of nanoparticles and base fluid, and increases with an increase in the volume fraction of nanoparticles.
纳米流体的对流传热系数随着颗粒和基液热导率的增加、颗粒体积分数的增加以及颗粒粒径的减小而增大。
A volatile pressing oil HC-L200 was formulated with hydrotreated narrow fraction light base oil, fatty acid ester lubricant and additives, such as homemade wetting agent and compounded antirust agent.
根据铝翅片冲压加工工艺的技术特点,选用加氢精制窄馏分轻质油为基础油,添加特制的脂肪酸酯为油性剂以及自制的润湿剂和复合防锈剂等添加剂调合成HC - L 200挥发性冲压油。
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