查询词典 closed time

Firstly, velocity expression of translational parallel manipulator was presented based on the screw theory. Secondly, the actuated screw, the actively unactuated screws and idle screws of each limb were determined according to the reciprocal screw theory. Then, all basic kinematic chains were enumerated by means of the number of limb connectivity and the limbs containing closed-loops were obtained by replacing the passive prismatic joints in the basic kinematic chains with planar closed-loop structures.

首先基于螺旋理论给出移动并联机构的速度表达式，然后根据互易螺旋理论确定出分支的主动螺旋、可动非主动螺旋和惰性螺旋，再依照分支连接度的不同列举出所有可行的基本分支运动链，并通过运动副替换得到分支中含有闭回路结构的运动链，最后利用所综合出的支链按照主动副的配置要求将动平台和静平台连接起来即可实现预期的机构。

In order to make the new recursive method convergence fast, the RLS-like forgetting factor is introduced to construct the new data Hankel matrices. In the framework of subspace methods, the gradient type subspace tracking method is used to implement the update of the state subspace, which results the unbiased estimate. Different from traditional offline method, the system matrices are recursively computed using RLS method. The convergence analysis of the proposed method is given and finally, the efficiency of this method is illustrated with a simulation example.A new closed-loop identification method is proposed to implement consistency estimation of closed-loop subspace identification.

引入RLS-like遗忘因子机制构造新的数据矩阵，更好地跟踪系统时变信息，提高递推算法的收敛速度；在子空间辨识框架内，采用梯度型子空间跟踪算法实现对状态子空间的更新，避免了子空间近似带来的估计有偏性；与传统的离线算法不同，在得到系统状态子空间后，基于递推最小二乘方法提出新的算法，实现对系统矩阵的递推估计；并给出递推子空间辨识算法的收敛性分析；最后通过仿真实例验证算法的有效性。

Closed loop wavefront residual error of adaptive optical system consists of the uncompensated turbulence error and closed loop noise.

采用比较自适应光学系统闭环校正前后时间功率谱的方法，对自适应光学系统的波前校正残余误差进行了分析。

The main contents are as follows.1 For the state control problem in closed quantum systems, according to the distance between states, the error between states and the average value of an imaginary mechanical quantity, three Lyapunov functions are chosen, respectively. The corresponding control law designs and the convergence analyses are studied. Especially, for the Lyapunov function based on the distance between states, a class of control laws that can solve the problem that an initial state is orthogonal to a goal state is designed. The convergence of the system is analyzed via LaSalle\'s principle and one method to find the largest invariant set of the closed loop system is proposed by linearizing the unitary evolution operator at the corresponding instants.

在这一背景下，本论文在指出研究量子系统控制的必要性、回顾量子系统控制理论和方法的研究现状的基础上，从控制理论的角度研究Lyapunov理论和最优控制理论对于封闭量子系统的应用以及开放系统中的若干问题，主要内容包含以下几个方面。1针对封闭量子系统中的状态控制问题，根据状态间的距离、状态间的偏差、一个虚拟力学量的均值，分别选择三种Lyapunov函数进行相应的控制律设计和收敛性分析。

Objective To compare the variability of adverse effects between BD closed tightly type detaining venepuncture and ordinary scalp venepuncture,and investigate the clinical effects applying BD closed tightly type detaining venepuncture in plasmapheresis.

目的 比较血浆置换术中采用BD密闭式静脉留置针技术与常规静脉穿刺出现不良反应的差异性，探讨BD密闭式静脉留置针技术在血浆置换术中应用的临床效果。

The device comprises retaining means for keeping the lid (2, 3) in place in a sealing manner during treatment, and the retaining means comprise a bounding frame (10) that is circumferentially closed, with two interconnected end pieces (11, 12) situated at a distance from each other, which end pieces in a closed position can be slid over the pressure vessel (1) and thereby retain the end faces of the pressure vessel (1) in the axial direction.

所述装置包括用于在处理期间以密封方式将盖子(2、3)保持在适当的位置中的保持装置，并且所述保持装置包括沿圆周方向密封的围绕框架(10)，具有两个布置在相隔一定距离的位置处的互连端部件(11、12)，其中所述端部件在关闭位置中可滑到压力容器(1)上，从而沿轴向方向保持压力容器(1)的端面。

Objective To study the antigenpresenting function of splenic dendritic cells in mice after hemorrhage plus closed fracture.Methods Splenic DCs were isolated 24h after hemorrhage plus closed fracture,then the ability to stimulate nonadherent splenocytes proliferation in the presence of conalbumin in vitro was detected,IL12 and IL10 levels in cell supernatants were measured by ELISA kits.

大量研究表明，创伤能引起机体免疫系统产生复杂的变化，树突状细胞(dendritic cells，DC)是体内功能最强的专职抗原递呈细胞(antigenpresenting cells，APC)，它可摄取和加工抗原，并分泌多种细胞因子，在激发T 细胞的免疫应答中起重要作用。

Objective To study the antigenpresenting function of splenic dendritic cells in mice after hemorrhage plus closed fracture.Methods Splenic DCs were isolated 24h after hemorrhage plus closed fracture,then the ability to stimulate nonadherent splenocytes proliferation in the presence of conalbumin in vitro was detected,IL12 and IL10 levels in cell supernatants were measured by ELISA kits.

大量切磋证明，创伤能引起机体免疫编制发生庞杂的改变，树突状细胞(dendritic cells，DC)是体内效用最强的专职抗原递呈细胞(antigenpresenting cells，APC)，它可摄取和加工抗原，并渗透多种细胞因子，在激励T 细胞的免疫应答中起重要作用。

The structure and stability of all possible isomers of C50X(X=SiH2, PH, S) were investigated by ab initio HF/3-21G calculations. The calculation results indicate that the preferred position for cycloaddition of SiH2, PH, and S on C50 is consistent, i.e. on the C3-C4 and C4-C4 sites of C50, and the resultant most stable cycloaddition isomers are [5,6]-closed and [5,5]-closed structures. The main driving force governing the stability of the C50X(X=SiH2, PH, S) isomers is the strain, or the conjugative effect, or the combination of strain and conjugative effect, depending on the addition positions and the types of the attacked C-C bonds.

用从头算HF/3-21G方法研究了C50的环加成衍生物C50X(X=SiH2， PH， S)所有可能的异构体的结构与稳定性，计算结果表明，SiH2基团、PH基团与S原子在C50上环加成的优先加成位置相同，都为C3-C4类键和C4-C4类键，并且相应形成[5，6]-闭环和[5，5]-闭环结构的最稳定异构体；决定C50X(X=SiH2，PH，S)各异构体稳定性的主要因素，因加成位置以及发生加成反应的C-C键的单双键类型的不同，可能是张力、共轭效应或者二者的共同作用。

Casethat begin transformation but do not become embedded in the baroclinic zone fail to complrte transformation and simply dissipate over lower sea surface temperatures.1at transformation stage,there are two features in 500mb analysis aKOPPU s surface center is located beneath concentric,closed 500mb contours and is equatorward of 5820-m contour associated with a short-wave trough to the northwest of strom bthe closed contours associated with KOPPU 24h earlier have combined with approaching 500mb trough so that KOPPU appear to be in an open wave.furthermore,streamlines associated with this short wave trough have wrapped around the circulation of KOPPU,which indicated that KOPPU has become embedded in 500mb westerlies.

台风变性分为两个阶段：变性阶段和再加强阶段；变性的开始和结束以热带气旋环流和先前存在的中纬度斜压带相互作用为基础，KOPPU嵌入先前存在的中纬度斜压带且风暴中心在冷下沉气流中，而KETSANA没有嵌入先前存在的中纬度斜压带则没完成变性只是消散在低的海平面温度(1)台风变性阶段在500hPa高度场分析中有两个重要特征：a首先风暴中心是闭合的等值线并和风暴中心西北的短波槽相关；随后闭合等值线靠近500hPa槽，因此风暴闭合中心消失，风暴位于开波中。b而且和短波槽相关流线缠绕在风暴中心，结果风暴在西风带中。

Some of them were ligated to the plasmid vector pCR 2.1 andsequenced,respectively.

将所获DNA片段克隆到pCR2.1载体进行测序，并与基因组数据库进行同源性比较。

Thinking since Google owns Blogger, I would be able to escalate this issue to the support team.

自谷歌的思考拥有Blogger的，我将能够缓解这一问题的支持团队。