查询词典 formation

The citric acid-producing strain Aspergillus niger 2363-2, was isolated and used in our research. The fermentation conditions were optimized as follows: sucrose as carbon source 8. 0-14. 0%, ammonium chloride as nitrogen source 3. 0-4. 0g/l, initial pH 2. 0, and cultural temperature 30℃. The influential factors of formation of spores were also studied, and a series of measures were taken to restrain the spore formation on the basis of our experimental results. With the consideration of the cultural environment and microbial cell itself, the factors affecting the duration of citric acid-producing activity of microbial cells were examined, and it is found that undissociated citric acid and the ageing of microbial cells are the main factors. The experimental results also show that partial replacement of fermentation broth can lengthen the duration of citric acid -producing acitivity of microbial cells.

筛选出了用于试验研究的柠檬酸发酵用菌Aspergillus niger 2363-2，确定了其最适发酵条件—碳源选用蔗糖，浓度8.0~14.0%，氮源为NH〓Cl，浓度3.0~4.0g/l，发酵初始pH值为2.0，培养温度30℃；讨论了分生孢子产生的影响因素，并通过试验提出了抑制分生孢子产生的措施；从分析微生物所处的环境和微生物本身两个方面出发，探讨了影响微生物菌体产酸活性持久性的因素，认为分子态柠檬酸和菌体本身的老化是影响微生物产酸活性持久性的两个主要因素，并提出采用部分置换发酵液发酵能延长微生物菌体的产酸活性。

Li reduces the surface tension of aluminum luquid obviously, increases the ratio and rate of heterogeneous nucleation, which is the necessary condition of the formation of fine grains. However, a large amount of unmelted Al3Sc, Al3Zr TiAl3 particles dispersively distribute in the luquid metal along the edge of the molten pool, which is the sufficient condition of the formation of fine grains.

Li显著地降低了铝液表面张力，大大提高了异质形核率和形核速率，是细晶层产生的必要条件；而熔池边缘液态金属中弥散均匀分布大量未熔化的Al_3Sc、Al_3Zr和TiAl_3质点，则是细晶层产生的充分条件。

Research on Coal-forming Environment and Sequence Stratigraphy in Coal Measures Strata;2. The results show:1, there were the differences between the characteristics of the coalification between the Taiyuan Formation vitrain and the Shanxi Formation vitrain which were formed in differencial coal-forming environment s, and the differ.

结果表明：在高煤级煤早期阶段，形成于不同成煤环境的太原组煤与山西组煤的煤化特征仍有差异，在第三次煤化作用跃变之后这种差异逐渐缩小消失；高煤级煤分别以第三次和第四次煤化作用跃变为界，呈现出阶段性演化的特征，每阶段的演化机理有所不同；第三次煤化作用跃变中大分子结构的演化以芳构化作用主为，第四次煤化作用跃变则以强烈的环缩合作用占优势。

Whipstock is put down in dense formation of Changlongshan group in Qingbaikou system, entering buried-hill formation by milling cone window sidetracking, oblique reducing, stabilizing and increasing of sidetracking. 152mm whipstock is chosen reasonably in construction cooperated with wireless inclinometer, which brings one-time seating and sealing success. Gabby cemented carbide is optimized as milling cone window sidetracking in 154mm XZ series of main cutting edge, which brings one-time success.

选择在清白口系的长龙山组致密地层(2617m)下入斜向器，使用铣锥开窗侧钻、侧钻降斜、稳斜、增料进入潜山地层，在施工中合理选用152mm斜向器，配合使用无线随钻测斜仪一次坐封成功，优选碎硬质合金作为主切削刃的154mmXZ系列铣锥开窗侧钻一次成功。

At that time, there were two streams in international relations: one was the formation of the Yalta system, and the other was the formation of two blocs at the start of the Cold War.

当时的国际关系有两条线索：一是雅尔塔体系的建立；二是冷战的开始与两大阵营的形成。

The formation course of zeolite membranes was discussed, and the formation mechanisms were developed.

三 对沸石膜的成膜进行了探讨，提出了沸石膜的晶化成膜机理。

Besides,interaction of preinvasion of Phytophthora in festans and variousplants was studied by using modified cellulose membrane technique.Potato tuberand leaf promoted both the zoospore germination and appressorium formation,or-ange fruit only promoted the zoospore germination and no effect on appressoriumformation.While onion bulb inhibited the both zoospore germination and appresso-rium formation.

此外，本文利用改进的纤维素膜技术研究了致病疫霉侵入前与15种不同植物之间的相互作用，明确马铃薯块茎和叶片对致病疫霉游动孢子萌发、附着胞形成和侵入丝形成均有促进作用，日本桔果实只对游动孢子萌发有促进作用，对附着胞形成无明显影响，葱和洋葱鳞茎则对游动孢子萌发和附着胞形成均有明显的抑制作用。

By carefully delineating the cultural root of the formation of Stalinist mode with regard to the historical, theoretical, and practical environment analysis, the thesis reveals the significant connections between the problems faced by the "intelligentsia hierarchs" in their attempts to erect a new culture, along with the limitations exposed through these attempts, and the Russian history, culture and traditions. Although the disciplinary character of the proletarian\'s political party theory also played part of the role in this Stalinist mode formation process, the absolutization of the disciplinary character was in fact also a derivative of the culture and tradition. In other words, the revolutionary intelligentsia deeply influenced by the Russian culture and tradition was the major undertakers or the main body to construct Stalinist mode.

论文通过从历史上、理论上和现实环境中分析论证斯大林模式产生的文化根源，揭示了权力知识人在建构新文化中所面临的种种问题以及他们自身暴露的缺陷都与俄国历史文化传统有极大的关系，虽然无产阶级政党理论本身的内在规定性也有一定的联系，但这种内在规定性被绝对化实际上也是离不开文化传统，由此可以这样说：深受俄国文化传统影响的革命知识分子是建构斯大林模式的主要承担者或主体。

According to the results of IR and XRD, two main mechanisms lead to the formation of cross-linked chitosan microspheres: one was the Schiff base reaction and hydrogen bond formation, the other was the acetalization.

结合IR光谱和XRD测试，分析了壳聚糖交联固化成球的机理：壳聚糖和香草醛之间所发生的Schiff碱反应和氢键的形成以及缩醛化反应，以此为基础共同形成交联结构从而使壳聚糖交联固化成球。

It is further revealed that the formation of cyclohexanone is a fast step and formation of adipic acid is a slower one.

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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。