查询词典 essential factor

ObjectiveIodine is essential for biosynthesis of thyroid hormones and causes changes on thyroidal health as an important environmental factor.

目的 碘是合成甲状腺激素的主要原料，也是影响甲状腺健康的重要环境因素。

Ptf1a, also known as P48, is an important bHLH transcriptional factor, functioning as an integral part of a trimeric protein complex Ptf1, which is essential for fate determination and cell differentiation of pancreas.

Ptf1a，又名p48，是Ptf1转录因子的一个亚基，为胰腺命运决定与细胞分化必需的转录因子。

Moreover, temperature and salinity were the essential factors to determine the seasonal changes of zooplanktonic abundance, particular the salinity which is the key factor to affect the horizontal distribution and abundance of zooplankton.

通过进一步线性回归分析表明，温度和盐度是影响浮游动物丰度季节变化的重要因素，其中盐度是决定浮游动物丰度水平变化的关键因子。

Analysis on the economic structure, essential productive factors and economic activities in the studied area proved that the backward economic structure and inferior productive factor are not only the results of passively acclimatizing the geographical environment, but also the reasons that lead to the irrational economic activities and the sacrifice of geographical environment in order to survive and develop.

对研究区域的经济结构、生产要素和经济行为3个方面分析认为，落后的产业结构和低劣的生产要素既是被动适应地理环境的结果，又成为导致人类不良经济行为和以牺牲地理环境为代价来求得生存发展的原因，防治荒漠化不应忽视通过改变现有经济结构、生产要素等途径和运用经济杠杆等手段规范人类活动。

Main ingredients:Deionized water、Rose essential oil、Hydrolyzed silk protein、moisture-preserving factor, etc.

主要成分：去离子水、玫瑰精油、水解丝蛋白、保湿因子等。

After educing the essential matrix,the singular-value-decomposition is carried out to obtain the rotation matrix and translation vector with a scale factor.

接着，求出本质矩阵，对其进行奇异值分解后得到旋转矩阵和比例因子意义下的平移向量。

It is detected by the Chinese Academy of Sciences Ocean: muscle contains more than 10 kinds of essential amino acids, fat containing 12.5%"DHA" and "EPA", to soften the heart and brain blood vessels, and promote brain development, improve the intelligence, prevention Alzheimer's disease has a good effect; cartilage and bone marrow (commonly known as "Long tendons") have anti-cancer factor, can be completely direct consumption, known as "Shark fin, bone sturgeon," said.

据中国科学院海洋所检测：肌肉含有十多种人体必需的氨基酸，脂肪含有12.5%的&DHA&和&EPA&，对软化心脑血管，促进大脑发育，提高智商，预防老年性痴呆具有良好的功效；软骨和骨髓有抗癌因子，可完全直接食用，素有&鲨鱼翅，鲟鱼骨&之说。

The eukaryotic translation initiation factor 5A (eIF-5A) is a small acidic protein (18k Da), widely presents in all organisms from archebacteria to mammals but not in eubacteria, with highly conserved sequences. eIF5A is unique in that it is the only protein known to contain the unusual amino acid residue hypusine (hydroxyputrescine-lysine), which is essential for eIF5A function and is formed by post-translational modification of a specific lysine residue.

真核生物翻译起始因子5A(eIF5A)是一个分子量约18 kDa的酸性蛋白，其序列从古细菌到哺乳动物高度保守，并广泛存在于各种真核生物细胞中。eIF5A是迄今为止唯一一种已知含有特殊氨基酸残基hypusine的蛋白质。hypusine是一种蛋白翻译后修饰产物，它的形成对eIF5A的功能完整至关重要，相关的研究结果表明hypsine在控制细胞周期循环的过程当中扮演着一个重要的角色。

Essential component: Micro biological element, deep sea fish roe essence, collogen, CM nanometer repair factor and so on.

主要成分：微量生物素、深海鱼子精华、胶原蛋白、CM纳米修复因子等。

The oscillation performance of jet, as oscillation frequency, is the essential data for designing the fluidic device, which is also the key factor that influence the coupling effect of fluidic device and receiving tube. This paper does experiment on the oscillation availability and frequency of feedback jet-oscillation gas wave refrigeration. As a conclusion, the jet oscillates only in a certain range of geometrical sizes and operating conditions. Under the condition of high pressure ratio, the frequency of the jet"s oscillation is only affected by the feedback tube"s length and chamber remarkably. Under the condition of low pressure ratio, the frequency descends with rise of the pressure ratio.

本文将跨音速正反馈射流振荡器与接受管耦合，对耦合后的射流振荡气波制冷机的可振性、振荡频率以及它们的影响因素作了实验研究，得出如下结论：射流只在一定的操作条件和几何结构尺寸范围内才能稳定振荡；射流的振荡频率在较高压比下只受反馈管长和反馈管容腔大小的显著影响，在小压比下随压比的增大而增加；其它结构尺寸和操作条件只影响可振性。

At the rear was an innovative combination transaxle with the gearbox, clutch, differential, and inboard-mounted drum brakes.

在后面是与变速箱，离合器，差的创新结合变速，和内侧安装鼓式制动器。

For more people can apprecaite and have the master work, there is reproduction painting appears in the market, the large various selection of paint,the high saturation of color plus the plentiful sfumato, to make the reproduction perfect copy and detail as original painting, so as to meet the requirment of amateurs who love art paintings,they do not need to pay high price to get classical paintings.

颜料色域广，色彩饱和度高，色彩层次丰富，图像色彩还原真实，能完美的复制原作，满足艺术爱好者欣赏，艺术爱好者们不用支付昂贵的价格就能拥有经典油画。