youdao

youdao

youdao

They want to get as far away from each other possible, the ideal angle is 120. But what we have here is a four-membered ring, so what angle does 90° that have to be, that bond? 90 degrees.

它们想要尽量远离彼此，最理想的是形成120°键角,但现在是个四元环,所以这键角应该多大？

麻省理工公开课 - 化学原理课程节选

And just to give you a sense, if you do a cross-cut of this, you cannot show it from this angle, but it should really be sort of a dumbbell shape with the nodal plane in between the two nuclei.

告诉你们这些就是给你们点概念，假如你们把他横切切开，不能从角度上展示，但它还是会保留几分哑铃的形态,以及在两核之间的节面。

麻省理工公开课 - 固态化学导论课程节选

Another way to represent a point in a plane is I've got a radius and I've got an angle from the x-axis, right, and that's a standard thing you might do.

平面上面的点的方法,也就是极坐标,上面那种方法其实是，如果你们喜欢我这么说的话,笛卡尔坐标表示法。

麻省理工公开课 - 计算机科学及编程导论课程节选

With its super wide-angle lens, covering from wide-angle 22.5mm to super-telephoto 675mm, users have the versatility to capture crisp, vivid images, whether up-close or at a distance.

ENGADGET: Nikon updates Coolpix compact lineup with S9500, sub-$200 S5200 and L28

The light, compact 3x zoom lens covers a frequently-used range of focal lengths from wide-angle 18mm to standard 55mm (35mm camera equivalent range: 27-82.5mm).

ENGADGET: Sony NEX-3N and Alpha A58 unveiled, heading to Europe this spring

Horgan dived over in the corner after good work by replacement Tomas O'Leary and D'Arcy eight minutes into added time and man-of-the-match Sexton converted from a difficult angle to maintain his 100% kicking record.

BBC: Ireland 41-6 Fiji