prrs造句

• Porcine reproductive and respiratory syndrome , prrs
  猪伪狂犬病是由伪狂犬病毒
• The dynamic model of the 6 - prrs parallel robot is developed for the dynamic control
  动力学模型是实现并联机器人动力学控制的前提。
• This thesis has deeply researched the motion control of a 6 - prrs parallel robot
  本文对6 - prrs并联机器人运动控制的各个方面进行了深入的探讨和研究。
• Two kinds of controllers in linkspace are developed to accomplish the tracking control of the 6 - prrs parallel robot
  在控制策略研究方面,本文采用分散控制策略实现6 - prrs并联机器人的轨迹跟踪控制。
• At last , the experiment system is established . the experiment successfully accomplishes the movement of the 6 - prrs parallel robot
  最后建立了实验系统,完成了实验分析,实现了6 - prrs并联机器人的运动控制。
• First , the kinematics model of the 6 - prrs parallel robot is established , and the inverse positional solutions are set to select easily
  首先建立了6 - prrs并联机器人的运动学模型,对位置逆解的选取进行了简化,方便了计算。
• Detection of prrs virions in the main organs of the challenged animals showed that , all recombinant plasmids and the inactivated vaccine failed to prevent the occurring of viremia
  而且不同的基因疫苗在诱导机体免疫应答、在机体的抗病毒作用中表现出不同的效能。
• The aim is to characterize the antigenic epitopes of prrsv isolates from different parts of china with a panel of 11 monoclonal antibodies raised against american prrs isolate isu - p
  采用ifma 、 rt - pcr及rflp方法对国内分离毒株的gp3 、 gp5和n蛋白抗原多样性及其orf5和orf7的遗传变异性进行了比较研究。
• The jacobian matrix of the 6 - prrs parallel robot has been computed by two methods . one is differential coefficient based on symbol operation , the other is vector construction
  对于6 - prrs并联机器人的雅可比矩阵,分别使用了基于符号运算的微分构造法和矢量构造法进行求解,并验证了两种方法的正确性。
• A distributed control strategy is used and a high robust auto - disturbance - rejection - controller ( adrc ) is designed in joint space of robot to implement the high - precision trajectory tracking of 6 - prrs parallel robot
  摘要针对6 - prrs并联机器人控制系统的非线性、耦合等特性，采用分散控制策略，在关节空间设计强鲁棒性的自抗扰控制器对其进行控制。
• Aimed at a kind of new typed 6 - prrs parallel robot , this paper studied the influence on its working space affected by the variation of structural parameters of the long rod , short rod , fixed platform and moving platform of this mechanism
  摘要针对一种新构型的6 - prrs并联机器人，研究了该机构中长杆、短杆、固定平台、动平台结构参数的变化对其工作空间的影响。
• For the preparation of the real - time control of the 6 - prrs parallel robot , track planning is researched , including trapezoid planning and s curve planning . the harmony motion of six - axis is analyzed to get the movements of the slides
  并对并联机器人的六轴协调运动进行了分析,得出了在这两种轨迹规划下的滑块运动曲线,为6 - prrs并联机器人运动的实时控制奠定了基础。
• Porcine reproductive and respiratory syndrome ( prrs ) , caused by prrs virus ( prrsv ) is a severe infectious disease in swine herds characterized by reproductive failure in sows and respiratory illness in young pigs
  猪繁殖与呼吸综合征( porcinereproductiveandrespiratorysyndrome ， prrs )是由prrs病毒( prrsv )引起的以母猪发生繁殖障碍和仔猪出现呼吸道症状为特征的传染性疾病。
• Porcine reproductive and respiratory syndrome virus ( prrsv ) is the causative agent of prrs . it causes an important disease in pigs characterized by reproductive failure in sows and gilts , pneumonia and an increase in perinatal mortality , resulting in great economic losses to the swine industry
  猪繁殖与呼吸综合征是由猪繁殖与呼吸综合征病毒( porcinerespiratoryandreproductivesyndromevirus , prrsv )引起的一种以母猪繁殖障碍和仔猪呼吸道疾病为特征的传染病。
• Two strains of prrsv were isolated from the swine infected with prrsv in shangdong province and daqing area , in order to clarify the source and genetic background of porcine reproductive and respiratory syndrome virus ( prrsv ) from different parts of china , thus providing theoretic basis for the study of vaccine against it . the prrsv was cultured on mark - 145 cells for 5 ~ ~ 6 passages . when the cpe was obvious , the virus was harvested and purified
  为了弄清我国不同地区prrsv的来源以及其遗传学背景，为疫苗学研究提供理论根据，本研究在ch - 1a株完整的基因组获得以后，从流行于我国山东( sd )和黑龙江大庆( dq )地区疑似prrs的猪体内分离到prrsv ，在mark - 145细胞上盲传5 6代，细胞出现明显病变以后，收获病毒液，然后提纯，提取全病毒rna ，经过反转录、 pcr扩增获得结构基因orf2 7的目的基因片断，然后与pmd - t载体连接，转化，得到阳性质粒后进行测序，并将其与ch - 1a株进行了比较分析，同时对这两个毒株的结构基因组的理化性质进行分析。