定干

结果表明：冬季幼树定干0.5m左右为上海地区枣树较适合的高度。

The results showed that 0.5m headed trunk height of sapling in winter was fit in with the circumstances in Shanghai .

粮枣兼顾的模式。3种间作模式枣树栽植密度不同，但枣树定干高度应在1～1.4m，树高度应控制在5～6m为宜。

The three kinds of intercrop model is different , the density of jujube planting is different , the height of jujube tree should he controled at 5 ~ 6 m.

叶用银杏园密度与定干高度效应分析

Effect of density and heading height on leaf-use Ginkgo biloba forest

叶片黄酮和内酯含量随定干高度的降低而增加；

The contents of leaf flavonoid and terpin content decreased with the increase in the heading height .

结果表明：采穗圃无性系植株的萌芽数主要取决于无性系遗传特性和栽植密度，同时与无性系植株定干高度、修枝、施肥等密切相关。

The results indicated : the number of germination of cutting orchard clone plant chiefly depended on genetic characters and planting density , meantime , they are had closely related with heading height , pruning , fertilization .

利用双因素随机区组试验设计，研究了3种密度与4种定干高度对叶用银杏Gingobiloba枝梢生长量、叶片产量及叶片主要有效药用成分黄酮和内酯含量的影响。

By double-factor randomized block field test , shoot growth , leaf yield , and the contents of main medicine components flavonoid and terpin of 3 densities and 4 heading heights in leaf-use Ginkgo biloba forest were tested .

弹簧振子在定常干摩擦阻尼作用下的振动

The oscillation of a spring oscillator under constant dry frictional damping

传统全晒主要致香物质的形成时期在凋萎变黄期，捂晒和烤晒的形成时期向后推移在定色干叶期。

The main aroma component of the sun-cured tobacco was formed in wilting and yellowing stage according to degradation material of chlorophyll and carotenoid material , but other treatments were formed in color fixing and leaf drying stage .

乙型肝炎病毒DNA定值冻干血清用于荧光定量聚合酶链反应测定的研究

Study on Quantified Lyophilized serum of Hepatitis B Virus DNA in Fluorescence PCR Detection

他定要那么干真使我生气。

It really peeves me that he chose to behave in that way .

在烘烤过程中，硝酸盐、亚硝酸盐和TSNA含量由鲜叶到变黄阶段期间上升，变黄阶段到定色阶段期间含量下降，定色阶段到干筋阶段期间基本保持平稳变化；

During the process of flue-curing , the nitrate content , nitrite content and TSNA content increase from the fresh leaf to the yellowing stage , decrease from the yellowing stage to the color-fixing stage , and hold stable change during the color-fixing stage to the stem drying stage ;