envelop curve 中文意思是什麼

envelop curve 解釋
包絡曲線
  • envelop : vt. 1. 包，封；蔽。2. 【軍事】包圍。n. ＝envelope. n. -ment 1. 封，包，包圍。2. 封皮，封套。
  • curve : n 1 曲線；彎曲；彎曲物。2 曲線規 （＝French curve）；【機械工程】曲線板；【棒球】曲線球；【統計學...
  1. With the experiment part, the errors of sk - 21 nc machine tool have been measured, and a serial of data is gotten which lead to the error discrimination. ( 3 ) based on the kinematical theory of mbs, the calculation methods for the ideal center envelop curve of grinding wheel on cam grinding, the practical cutter track, inverse contour of cam, ideal nc instructions, precision nc instructions, the inner / outer normal and the fitting criterion of curve have been all discussed in detail in this paper

    （ 3 ）通過精密加工的約束條件方程，探討理想刀具路線、逆變數控指令與實際刀具軌跡之間的映射關系，解決誤差補償技術提高加工精度的核心問題? ?當要求數控磨床的砂輪中心準確到達給定的理想點時，精密數控指令值究竟該是多少，如何能夠通過計算，獲得這樣的數控指令值，給出經修正的數控指令計算方法。
  2. Comparison including the cracking, yielding and ultimate loads of the beam, load - displacement curve, envelop curve, the ductility and energy - dissipation capacity were made between the response of the specimens before and after strengthening. test results indicated that the yielding loads of the specimens after strengthening were improved from 12. 3 percent to 17. 2 percent and the improvement of specimens rehabilitated by jacketing was higher than that of the bonding steel plates one

    加固后試件破壞同樣發生在梁端，屈服荷載比加固前提高12 . 3 17 . 2 ，與粘鋼加固相比，加大截面法加固的試件承載力提高幅度較大；加固后試件的延性和耗能性能比加固前有很大的改善，其中以粘鋼加固的試件提高最為明顯。
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