speed-length ratio

For water, both the ratio of flow boundary layer thickness to film thickness and that of temperature boundary layer thickness to film thickness reach the minimum value under high rotor speed or the optimum feeding rate.

高转速或最佳进料量下，纯物质水流动边界层与膜厚之比及温度边界层与膜厚之比均最小，流动边界层与温度边界层存在内在联系。

Thermal boundary layer effect and flow resistance properties are analysed by changing the block ratio and speed tube.

通过改变阻塞比和车速分析管内热边界层效应和流动阻力特性。

The optimum value of ball-to-powder weight ratio has been deduced from theoretical relationship between frequency, speed of collision and ball-milling conditions.

由碰撞频率、速率与球磨工艺条件的理论关系推导出了球料比的最佳值。

Effective curve and analysis of variance showed that stirring speed, reaction temperature, ratio of poly-lactic acid and melatonin, concentration of chitosan were the main factors.

正交设计效应曲线图直观分析和方差分析结果显示，搅拌速度、溶剂挥发温度、聚乳酸与褪黑素投药比、壳聚糖浓度是影响制备工艺的主要因素。

The results showed that the higher the blending ratio of thiadiazole derivative ( TDD) to amino type accelerator ( NC), the faster the curing speed of CM.

结果表明：胺类促进剂（NC）/噻二唑衍生物（TDD）的并用比越大，硫化速度越快；