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The aim of this study was to analyze the relative expression patterns of mRNA for IGFs in different development stage of preimplanted ovine embryos by using reverse transcription-polymerase chain reaction.

本研究主要在mRNA水平上检测了IGFs在绵羊植入前不同发育阶段胚胎中的表达规律。

This paper presented a new method for ranking the alternatives in AHP, different from the traditional methods, it can directly obtain the importance weight of each alternative by only solving alinear equations, without any given criteria or the paired comparison matrix. Moreover, it keeps the transitivity among the alternatives and the relative importance between arbitrary two neighbouring alternatives in the entire sequence ranked.

针对层次分析方法中传统的层次单排序方法存在的弊端，提出一种新的层次单排序方法，该方法不需判断矩阵和一致性检验，通过解线性方程组直接获得各因素关于上层因素的重要性权值，且保证了因素间重要程度的传递性以及相对重要程度的不变性。

The result through chlorophyll a,chlorophyll b,the total quantity as well as the different cell membrane relative penetrable multiple comparisons in various times.

以渗水地膜为试材、普通聚乙烯塑料薄膜为对照，对比研究了渗水地膜覆盖对花生叶绿素含量和细胞膜透性的影响。

Furthermore, we also studied the relative strength of different composition to oxidation stability by principal component analysis.

此外，还通过主成分分析的方法分析了不同组成对旋转氧弹值的影响强弱。

Meanwhile,the development effect,relative molecular weight and mechanical properties of radiopaque polyurethanes with different iodine content were also studied.

利用X-射线映射对不同封端量聚氨酯的显影效果进行评定；利用DSC和TGA对其热性能进行表征，并评估封端反应对聚氨酯热稳定性的影响；利用噻唑蓝比色法测试了材料的细胞毒性；并对具有不同碘含量聚氨酯材料的显影效果、相对分子量及其分布、力学性能进行了对比研究。

As the relative costs of different transportation modes change over time, companies need to reanalyze theiroptions in the search for optimal arrangement.

随着时间的推移，不同运输方式之间的相对成本回发生变化，公司需要重新分析其选择已经找到最佳的安排。

Based on the mass/charge error distribution, a recalibration scheme is proposed and an experiential formula which is used to determine the mass/charge error tolerance in different relative intensity is provided.

在此基础上，提出了一种对质谱数据进行系统误差再校正的方法和一种根据信号强度确定误差容限的模型。

According to third-order aberration theory, the conditions of the absence of aberrations were analyzed, and the influences to the remaining high order aberrations of the system caused by the change of the relative aperture of the primary mirror, the position of the corrector and the different combination of the positive and negative lens in the corrector were investigated.

根据像差理论分析了消像差的条件，研究了主镜的相对孔径变化、校正板在次镜后的位置变化以及无光焦度校正板的正负透镜的不同组合形式对系统高级残余像差的影响。

The grain model of SrTiO3 was designed based on their crystal habit for {111} and {100} planes as its major grain boundary; the shape may be different with the change of the relative area of the two boundary planes.

根据SrTiO3陶瓷中晶粒以{100}和{111}晶面为主要晶界的结晶习性，以及晶粒形状随{100}和{111}占晶界面积不同而发生变化的特点，设计了适合SrTiO3晶粒形状特征的晶粒模型。

Containing the Visible Region positioning and the Sequence Region positioning raised in this paper as well as the Orientation Region positioning raised by Levitt [17] , the qualitative positioning method segments the environment of robot into different equivalent classes , and describes the positions without coordinates but just using landmarks and landmark relations, based on the extracted qualitative relations from images such as the visibility of landmarks, the sequence of landmarks and the position relative to the landmark pair boundary .

定性定位包括本文首次提出的可见区域定位和顺序区域定位，以及Levitt[17]提出的有向区域定位，利用通过图像获取的路标的定性关系如路标的可见性，路标排列的顺序和相对于路标对边界的位置等，将机器人的运动环境划分为若干个等价类；其定性性体现在不必使用坐标就可描述机器人的位置，这种定位方法只利用视觉反馈中的定性信息。

In the United States, chronic alcoholism and hepatitis C are the most common ones.

在美国，慢性酒精中毒，肝炎是最常见的。

If you have any questions, you can contact me anytime.

如果有任何问题，你可以随时联系我。