查询词典 sampling fraction

To make the transgenic mice: We purified the gene fraction nestin-hsp68-EGFP and injected it into pronucleus of mouse zygotes to generate the transgenic mice.

1。转基因小鼠的获得：纯化基因片段nestin-hsp68-EGFP，用显微注射方法把基因片段注射到受精卵的雄原核中，获取转基因小鼠。

It requires special tool to have the diamond in fraction of proper shape.

要把钻石切割成合适的形状需要专门的工具。

One forth is a proper fraction.

四分之一是一个真分数。

It seems that a proper reduction of volume fraction of graphite fibres will be available to improve further the properties of compsite.

讨论了纤维分布情况对界面微观结构的影响，认为适当降低纤维体积含量对进一步改善复合材料性能有利。

Proper types and volume fraction of precipitates are benefi- cial to rupture strength.

适宜的第二相体积分数及分布有益于持久性能。

Applied theory of proper fraction and subject reaction, measure quality of objectiveexandnation questions and compare the theory of two kinds.

应用真分数理论和题目反应理论分别对客观性试题质量进行了测量，并把两种理论加以比较，获得了一些有益的结果。

Element approach is employed, and the amount of each component holdup is calculated element by element with a proper void fraction model.

将换热器分解成若干微元，选用恰当的空泡数学模型，计算各组分在换热器中的滞留量。

It is, e.g., logically impossible that any proper fraction should exceed the ratio 1/1; and again, on a certain definition of "angle," it is logically impossible for any angle to exceed four right angles.

它是，例如，逻辑地不可能任何真分数竟然超过比率 1/1；并且再在"角度"的某个定义上，任何角度超过四个直角是逻辑地不可能的。

The results show that a proper fraction of the secondary air could make the flame highly stable in the middle section within a wide range of flow rates,and have low emission of CO,specially for lower lean equivalence ratios.

结果表明，加入适当比率的二次空气，不仅能够在相当宽的流速范围内使火焰很好地稳定在中间段，而且能得到低水平的CO排放浓度，特别对较低当量比效果更为明显。

Using many methods,such as method of completing the square,method of undetermlined coeficient etc,this paper solves the problem of integral of rational proper fraction.

利用配方法，待定系数法等方法求解有理真分式的积极分问题。

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。