repeat pulls中文是什么意思

• 反复划水练习

• repeat    n. 1.再说，再做，重演；(尤指应听众要求的)再演；重 ...
• pull    vt. 1.拉，拖，牵，曳 (opp. push); 勒 ...
• core pulls    抽芯装置
• forward pulls    向前推
• pulls into step    达到同步
• zipper pulls    拉片
• no-repeat    不重覆
• repeat it    再读一遍
• to repeat    重蹈
• bull drilling and backward pulls    双人对面向内和向外互推拉杆柄
• cam side pulls    凸轮式侧拉抽芯机构
• mummy ripcord pulls    摹拟拉把
• pulls out of step with    与...变得不同步
• pulls out of stwith    与变得不同步
• she pulls out    她退出了
• pulls those shades down tight    阴凉下来紧拉着那些
• then your voice pulls me back    就在此刻; 你的声音把我唤回; 你的声音把我拽回; 然而你的声音将我拉回来
• your spirit pulls me through    你的灵魂带我穿越
• a repeat order    续订订单; 续订货
• all repeat    重覆播放
• ankyrin repeat    锚蛋白重复序列
• automatic repeat    自动循环; 自动重复
• block repeat    分段重复
• chromosome repeat    染色体重叠

• Then we also study the effect of string on the dynamical characteristic under the symmetric load and not under the symmetric load as the prestressing is the key making beam string structure the balanceatie system , having large rigidity and embodying the superiority of dynamical characteristic of this structure , this paper studies and conceives how to deteimine the number of the prestressing in each stage of construction and through comparing between the plan of onetime and repeated pulling construction choose the suitable pulling construction plan
  并且本文还研究了在对称荷载和不对称荷载两种工况下，结构的受力性能随竖向撑杆数目、结构垂跨比以及下弦索预应力等参数改变时的变化情况，总结出该结构受力方面的特征，为实际工程设计提供依据。鉴于预应力是使张弦梁结构形成自平衡体系、具备较大刚度和体现结构性能优势的关键，本文研究和探讨了结构施工各阶段该预应力大小的确定方法，通过一次张拉与二次张拉方案各项指标的比较，选择适当的预应力张拉施工方案。