For ease of reading and portability among editors and email readers , limit lines to 80 characters 把行字長限制在80個字符是為了在編輯器或者電子郵件軟件中閱讀方便。
Gnu sed also doesn t suffer from many of the limitations that earlier and proprietary versions of sed had , such as a limited line length - gnu sed handles lines of any length with ease 另外, gnu沒有sed早期專門版本的很多限制,如行長度限制- - gnu可以輕松處理任意長度的行。
4 . 1n order to priority meet the water needs of songhua basin and transfer more water to liao basin , in main river model " limiting line " method is used to operate reservoirs 4 、干流模型中采用了利用水庫調(diào)水限制線的方法對水庫進(jìn)行調(diào)度,以優(yōu)先滿足松花江流域用水后,再盡可能向遼河流域調(diào)水。
Equations of mesh , shorting contact line , undercutting limit line , meshing limit lines and the existence conditions , angle between the direction of relative speed and the direction of contact line , induced normal curvature about every point on the contact line are established . moreover , the paper also theoretically analyzed the error of the grinded gear surface . on the basis of the theory , the computer program is worked out to automatically produce the contact line and the boundary curves of mesh . analysis of meshing circs under different parameters can be done so that we can gain the best process condition 首先對漸開面二次包絡(luò)理論進(jìn)行了深入的探討,推導(dǎo)出了兩次嚙合的嚙合方程式、瞬時接觸線方程式、根切界限線方程式、嚙合界限線的方程式及其存在條件,相對運動速度方向與接觸線方向的夾角及接觸線上各點的誘導(dǎo)法曲率;此外,還對磨齒后工件的齒面誤差進(jìn)行了理論分析;并在理論基礎(chǔ)上編制了相應(yīng)的計算機程序,自動生成接觸線族及嚙合界限線,對不同參數(shù)條件下的嚙合情況進(jìn)行分析,可以使工藝條件達(dá)到最佳狀態(tài);最后研究了磨齒裝置,設(shè)計了磨齒機的傳動系統(tǒng)。
Tooth surface equations and contact line equations of the involute worm gearing are established according to its machining methodology . meshing characteristics in rigidity condition are studied . these characters include the inductive normal curvature along the contact line on the worm surface , the first and the second limit lines during the engage of the worm gear , and the influence of the intersect angle between the contact line the relative velocity of the worm and the gear on transmission performance 根據(jù)漸開線圓柱蝸桿傳動的創(chuàng)成方法,建立了漸開線圓柱蝸桿和蝸輪的接觸線方程式、齒面方程式,分析了漸開線圓柱蝸桿傳動的剛性嚙合特性,如蝸桿與蝸輪嚙合時的誘導(dǎo)法曲率、一類界限曲線、二類界限曲線和蝸桿與蝸輪間相對速度方向和接觸線方向的夾角對傳動性能的影響; 2