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: E3 M( J0 s" a$ o2 v: pSo often people are working hard at the wrong thing. Working on the right thing is probably more important than working hard.
+ O2 p$ p) R% e" z很多时候人们努力错了方向,在对的事情上努力可能比努力本身还重要。
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! w! J2 G' J, {$ r, K( tGears are compact, positive-engagement, power transmission elements in gearing transmission, which determine the speed, torque, and direction of rotation of driven machine elements." a& W z- t( E' L% z4 F
句意:在啮合传动中,齿轮是一种结构紧凑的、强制性啮合的动力传输元件,它可以决定速度、转矩和被驱动的机器零件的旋转方向。
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accommodate [ə'kɔmədeit] v. 容纳;使适应;为…提供住宿
! a# w5 ^+ T1 `, E4 y8 Saddendum [ə'dendəm] n. 齿顶高, e1 a+ h, H& w" q* C) j- }/ p
axial pitch 轴向节距7 y1 ^. f! g; E
backlash [bæklæʃ] n. 侧隙! h ^0 X, T0 N6 c) z L
base circle 基圆
8 d" A+ p. [9 j! S$ Dbase pitch 基节8 a( ]7 X4 f0 q, L- H& y& l* ?4 U
bevel gear 锥齿轮- s$ H2 Q( ]8 d% w! v
circular pitch 周节, V. }0 ]0 x: P
dedendum [di'dendəm] n. 齿根高5 K$ [, B% Z+ M) n' q8 y, t; ^2 s
diametral pitch 径节
! x' N( b5 s' o edifferential [ˌdifə'renʃəl] adj. 差别的,区别的 n. 差别,差异;微分4 W+ b; u1 e8 L) z. ^5 ~
double-enveloping 二次包络2 P. B) X, I x2 @, P1 z H3 {3 p7 C
face width 齿宽. [: d( e9 ~6 {
flank [flæŋk] n. 侧面
4 j v% p1 U9 n( l7 q2 t* Hgeometry [dʒi'ɔmitri] n. 几何,几何学5 O8 m% \. b1 s* v* W6 r- I8 w6 L, p V2 W
helical gear 斜齿轮- f r: m4 e4 ^* i+ V4 w
hypoid gear 伞齿轮
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