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Soil organic carbon is an important indicator of soil quality, and labile organic carbon fractions play an important role in soil quality development.

土壤有机碳是土壤质量变化的重要指标，土壤活性有机碳组分在土壤质量变化方面发挥重要作用。

Therefore, the labile rhizosphere soil solution fraction can represent the bioavailable fractions of metals to plants.

因此，根系湿土壤溶液可移动性级分能代表可为植物所利用的生物有效态。

The chemical components of the invention are matched according to the weight fractions of 20 to 30 percent of copper, 3 to 7 percent of titanium, 0.05 to 0.5 percent of lanthanum and the other is argentine.

其化学成分按重量分数配比为：20％～30％的铜，3％～7％的钛，0.05％～0.5％的镧，其余为银。

Detection of oviposition-stimulating fractions in white and yellow glands of A. lata further demonstrates the importance of male accessory glands in the reproductive physiology of female insects.

而从长额负蝗的黄色和白色腺体侦测到能刺激排卵的蛋白质，更进一步证实雄性副腺对於雌性昆虫生殖生理的重要性。

This paper points out the relationship between the coefficient of Laurent series and that of the sum of partial fractions for rational functions.

笔者在此指出了罗朗级数的系数与有理函数分解的部分分式之和的系数之间的关系，并举出应用实例。

The molecular weight of broad bean vicilin and legumin measured by gel filtration chromatography were 135000 and 351000, DSC showed that their denature temperatures were 72℃ and 87℃ respectively. The legumin had a lowest solubility at pH 4. 5-5. 0 whereas the vicilin at pH5. 5. Vicilin and legumin were all possessed low levels of α-helical and high β-sheet secondary structure fractions. The total content of α-helical,β-sheet and β-turn fraction of vicilin and legumin reached to 90% and 78% separately showed that they had a high ordered structure in solution.

对两种组分的凝胶层析表明7S和11S的相对分子质量分别为135000和351000；DSC分析显示其热变性温度分别为72℃和87℃；溶解度分析表明：11S球蛋白在pH4.5-5.0之间，7S球蛋白在pH5.5时具有最低的溶解度；圆二色性分析结果显示7S和11S球蛋白的β-折叠结构含量分别高达40.5％和38.1％，证明二者都属于β-折叠型蛋白质，二者的α-螺旋、β-折叠和β-转角结构的含量总和分别达到了90％和78％，从而说明它们在溶液中的结构是高度有序的。

Found in coal-tar light oil and in petroleum, it is obtained chiefly from the processing of petroleum fractions .

甲苯发现于石油和煤焦油中，主要从石油处理过程中获得。

On the other hand, alcohol and phenol compounds are the main compounds in ether fractions (SF2 and LF2), where the main compound is linalool.

在乙醚区分物(SF2， LF2)的组成分中皆以醇酚类化合物为其主要的组成分，其中以linalool为主要的化合物。

The effects of various active fractions isolated from oolong tea on norepinephrine-induced lipolysis were examined in isolated fat cells.

乌龙茶的水提取物能够促进去甲肾上腺素诱导的脂肪分解，其活性成分之一经鉴定是咖啡因。

Think of elementary school when you had to reduce fractions to the lowest common denominator.

您应该还记得在小学简化分数时用到的"最小公分母"定律吧。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。