来源

IPE culture is a reliable resource of cells for autograft.

培养的IPE细胞为自体移植提供了较可靠的细胞来源。

This is the motive power of the automobile.

这个就是汽车的动力来源。

But autoplasty will damage normal tissue and increase new trauma and the possibility of operation complications. Besides, the source of autografts limits their clinical application.

但自体组织移植是以牺牲正常组织为代价的治疗手段，既增加了新的创伤，又增加了手术并发症的可能，再加上自体组织来源有限，限制了其临床应用。

Embryo development and origin of twin-embryo of autotetraploid rice with twin-embryo seedlings were observed and verified.

利用激光扫描共聚焦显微技术对同源四倍体双胚苗水稻的受精过程、胚胎发育过程和双胚来源进行观察鉴定。

Most reproducing females were allowed to lay eggs in laboratory enclosures of which each held skinks from the same population, and the remaining females were used to test for the influence of thermal condition and caudal autotomy on the timing of reproduction, reproductive output and egg size.

多数从野外捕获的母体饲养在实验室围栏内直至产卵，不同种群来源的石龙子分别关养；其余母体用于检测怀卵期环境温度和断尾对繁殖输出和卵大小的影响。卵在三个恒温、一个波动温度热环境中孵化，用于检测孵化温度对孵化成功率、孵化期和幼体表型特征的影响。

Stem cells in bone marrow are considered as an ideal sources of seed cells with the advantage of being isolation and easy proliferated in vitro, which is a prerequisite for the autotransplantation.

存在于骨髓内的干细胞来源丰富，采集方法简单，体外扩增容易，具有自体移植的必要条件，是一种理想的种子细胞。

It is one of the most important sources for understanding the history during the Spring and Autumn period.

这是一个最重要的来源，了解历史在春秋时期。

Most audio cards for personal computers provide at least two types of recording sources: an auxiliary audio line and microphone input.

大多数音频卡，个人电脑，至少提供两种类型的录音资料来源： 1辅助音频线和麦克风输入。

The contents from the third chapter to the fifth chapter are the kernels which are a series of applications of generalized regression model and generalized regression estimator. At first, this paper constructs ratio model, linear regression model, post-stratified regression model and nonparametric regression model through different regressive relationship between auxiliary variable and study variable.

首先是依据辅助变量与研究变量之间回归关系的不同，分别建立比率模型、线性回归模型、事后分层回归模型和非参数回归模型，然后再利用第二章中推导出的广义回归估计理论，对各种回归模型辅助下(来源：A4bBC12论文网www.abclunwen.com)的估计方法进行了系统性研究，从而构成了模型辅助估计方法的整个研究体系。

Based on the analysis of the mechanism of robot manipulators, a trajectory tracking controlling research model is first built up with ADAMS, and its mathematical model is formulated through the study of robot kinematics and dynamics. After the modeling errors are analyzed in practical robotic systems, a conception of centralized error is brought forward according to the theory of weighting functions. In the case of modeling errors' exist, the robotic uncertain model is derived by introducing an auxiliary control variable into inverse dynamic analysis. The control strategy of robust exponential convergence is applied to the robotic uncertain model, the applicable conditions and the applicable controller with this application are presented. The stable control effect under three main model uncertainties (parametric errors, joint disturbs, joint frictions) are systematically studied on the previously built research model. The problems of robust exponential convergence controller which often results in unstable output and so produces a large relative error when the input trajectory is in a small range are resolved by adjusting the control parameters based on the controller's structure.

本文在机械手的机械结构分析基础上，利用ADAMS建立了用于机械手轨线跟踪控制研究的机械手模型；通过对机器人运动学和动力学问题的研究，建立了机械手研究的数学模型；分析了机器人系统中模型误差的主要来源，根据加权函数法分析，提出了模型集中误差的概念；在存有模型误差的情况下，采用逆动力学结构并引入辅助控制量，由机器人误差模型推导了机器人非确定性模型；提出了采用鲁棒指数收敛法对上述机器人非确定性模型进行鲁棒镇定的控制策略，并给出了对机器人进行鲁棒指数收敛控制时系统不确定因素应满足的匹配条件；针对机械手研究模型，深入研究了鲁棒指数收敛控制器对机器人系统中常见的模型参数误差、关节扰动、关节摩擦等不确定因素的镇定控制效果；针对鲁棒指数收敛控制器易产生控制量振荡的问题以及在小范围内系统轨线跟踪的稳态误差过大问题，本文分别提出了基于控制器结构的控制参数调整法和基于轨线跟踪范围大小的控制参数分段切换法。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。