查询词典 initiation

With industrial monomer solution of dimethyldiallylammonium chloride as raw material, ammonium persulphate as initiator and Na_4EDTA as chelating agent,using the methods of adding initiator all at once,graduated increasing of temperature and stepwise initiation and polymerization,the polymerization process of preparing poly-dimethyldiallylammonium chloride was researched.

以一步法工业单体二甲基二烯丙基氯化铵为原料，以过硫酸铵为引发剂，采用一次性加入引发剂，梯度升温，分步引发水溶液聚合反应的方法，对制备聚二甲基二烯丙基氯化铵的聚合反应的工艺进行了优化研究。

Physiologically, our model estimated 2.6 days to reach the single ridge stage, 5.6d to the double ridge stage, 11.3d to the stamen and pistil initiation stage, 13.1d to the anther separation stage, 15.3d to the pollen mother cells stage and 18.2d to the tetrad stage. Phenologically, estimations were 13.1d to reach the jointing stage, 28.7d to the heading stage, 32.8d to the grain filling stage and 51.5d to the maturity stage. PDT was consequently used as a unified scale for measuring developmental progress of different cultivars under different climates and cultural practices.

经测算，各大麦品种到达单棱期、二棱期、雌雄蕊分化期、药隔形成期、雌蕊柱头二裂分叉期、雌蕊柱头毛状突起期等顶端发育阶段的生理发育时间分别为2.6、5.6、11.3、13.1、15.3、18.2、28.7d，到达出苗期、拔节期、抽穗期、灌浆期和成熟期等主要物候期的生理发育时间为0、13.1、28.7、32.8、51.5d，形成了不同大麦品种在不同气候和栽培条件下统一的衡量发育的定量尺度。

The distillation column with a single photochlorination reactor was built in this paper, which is used in the laboratory study. In light initiation, the semi-continuous operation was applied to study the influence of the chlorine flow, the reflux and the height of the packing on photochlorination of acetic acid. Crude MCA with a purity of 90% or more was attained and the feasibility of this technology was proved.

本文建立了适合实验室研究的背包式光氯化反应精馏耦合装置，采用半连续操作的方法，在光引发条件下，考察了氯气流量、回流量和填料高度对乙酸光氯化反应的影响，得到了含量达90％以上的氯乙酸粗品，证实了工艺的可行性。

Debris-flow initiation criteria commonly depend on the hydrological and physiographical conditions of the watersheds of debris-flow-prone streams. The occurrence of debris flow in Taiwan is closely related with the rainfall condition. For a specified watershed, the key factor for debris flow occurrence is the rain condition.

过去农业委员会水土保持局委托办理「以降雨因子进行土石流警戒基准值订定」之五年期计画中，主要著重於研究土石流发生降雨机制模式的建立，并於实际应用中证明其可行性。

By initiation 6000, the pituitary, pineal and male and female chakras open.

到6000股为止，垂体、松果腺和男女性脉轮打开。

In species of Pinus which are polycyclic flower initiation must occur over a wide time range.

具有多环球花的松树属种，其花的孕育期会延续较长的时间。

In the present study, the autotetraploid rice IR36-4X was treated with ion implantation technique by nitrogen ion beams and a polyembryonic seedling mutant (named as the IR36-Shuang) was identified in M2 generation. The mutant line was systematically investigated about the location of seedling in polyembryonic seedling, and the cytological initiation of the additional embryo in the 1R36-Shuang was observed and determined.

以低能氮离子束为诱变源，通过对同源四倍体水稻品系&IR36-4X&进行离子注入后在其第2代群体内筛选得到了1株具有多胚苗性状特征的突变株（IR36-双），对该突变株后代的多胚苗形态特征及其多胚来源进行了研究。

The timely secretion of gonadal sex steroids is essential for the initiation of puberty, the postpubertal maintenance of secondary sexual characteristics and the normal perinatal development of male external genitalia.

性腺性激素的及时分泌是青春期始动，青春期后第二性征的维持及男性出生前后正常外生殖器发育的必要因素。

There is a transient stage of petal-stamen common anlagen before petal and stamen primordia initiation.

本研究试图从两条途径考察拟南芥和百脉根花模式复杂度差别的问题。

During root primordia initiation,large amount of starch depleted,the amount of protein,free amino acids and peroxidase activity increased.

在根原基形成时，淀粉大量消耗，蛋白质和游离氨基酸含量增加，过氧化物酶活性增强；而在根原基形成后根的生长过程中，淀粉含量回升，蛋白质、游离氨基醚含量和过氧化物酶活性下降。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。