needle-density的意思|示意

The real density of needle coke strongly influences the bulk density of graphite electrodes: a coke of high real density tends to yield low density rods.

针状焦的真密度强烈地影响着石墨电极的体积密度：真密度高的焦炭往往产生低密度的电极。

The population density shows a positive correlation to the blackening degree of the needle.

松针红蜡蚧虫口密度与针叶变黑呈正相关，受害木的材积生长率受到较大影响。

The results show that Widmansttten structure needle consists of many blocky subgrains that have higher dislocation density and subgrain boundary is made up of dislocation tangle.

结果表明，魏氏组织针由多个块状的亚晶粒组成，亚晶粒边界由位错缠结而成，在亚晶粒内有较高的位错密度；

The introduction of the magnetic field made the average crystallite size of needle coke decrease, graphite-based performances improve, density increase and transmittance reduce.

磁场的引入，使得针状焦的平均微晶尺寸降低、石墨化性能提高、致密度增大、透光率降低。

The calculation and converting of the formula for punching density of needle punching nonwovens and the usage of the slide rule are introduced, to be favourable for producers to use.

介绍了针刺法非织造有针刺密度的计算公式及其变换，以及计算尺的使用，以利于生产者方便应用。

Early and late frost, Dedrolimus superans, sawfly and needle cast of larch could reduce the quality and quantity of foods of larch casebearer and had indirect effects on its population density.

早霜、晚霜、松毛虫、叶蜂及落叶松早期落叶病等都能直接影响鞘蛾食物的质量和数量，进而间接地使鞘蛾种群密度降低。