查询词典 sampling fraction

Determination on the bioactivity of 3 fractions （nexane, chloroform and water fraction）of the chloroform fractions from stem of Mirabilis jalapa L against 4th instar larvae of Pier/is rapae L.

取食第3天与第5天的拒食率分别为96.80%与99.67%；也测定了紫茉莉茎氯仿提取物各萃取物（正己烷、氟仿和水萃取物）对4龄菜粉蝶幼虫的生物活性。

KUALA LUMPUR: It is roughly half the size of Southeast Asia with only a fraction of the population.

吉隆坡：这个国家拥有东南亚一半面积的国土，但是仅仅是一个零头的人口。

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。

All in a fraction of the space available on a typical landing strip.

所有飞机就在那一小块儿跑道上起落。

Lanthanum treatment increased levels of Zn and Mn in the cell wall fraction but decreased levels of Ca and Mg.

La处理还显著增加了细胞壁中Zn和Mn的水平，但降低了Ca和Mg的水平。

The response is expanded in terms of the system eigenveetors by Laplace transform and partial fraction expansion.

文中证明了x对本征矢量的展开式，讨论了增加约束对本征振动的影响，定义了共振时的振功放大倍数。

Sometimes, I find it laughable that those in our memory occupy a small fraction of people

有些时候我觉得很可笑，那些在我们记忆力占据着很小一部分的人们，却往往给我们留下了最深刻的印象

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。

Of the positive integers that are multiples of 30 and are less than or equal to 360, what fraction are multiples of 12?

在这种情况下，题目里面的生词已经解决了，但是还是读不懂，怎么回事呢？

By using the linear fraction transformation method, the compared measurements are made, which verify the validity of the theoretical results.

文中应用分式线性变换检测法进行了对比测试，验证了理论分析结果的正确性。

Objective:To compare the response control and attention of Schizophrenic patients with that of the healthy controls by Integrated Visual and Auditorycontinuous performance test. To quantitate the impairment of cognitive function in patients, and to explore the relationship between cognitive function and the severity of the disorder.

目的：探讨精神分裂症病人在IVA持续操作测试中的反应控制能力、注意力等，并与健康人进行比较，从而量化精神分裂症病人的认知功能损害，并进一步探讨其认知功能与疾病严重程度的关系。

Main effective factors including subcooling degree, mechanical vibration, gas hydrate reformation, environment temperature, noncondensing gas and surfactant are analyzed.

指出过冷度、机械振动、重复生成水合物、环境温度、不凝性气体、添加剂是影响气体水合物生成的主要因素，还对R152a水合物的放冷进行了实验研究。