Just around the corner was an unusual 3D printer spewing out plaster-like handset models for the R&D staff to have a look-and-feel of their designs.

拐角处放着一台并不常见的3D打印机，可以帮研发人员制作手机模型，并在第一时间感受自己设计手机的优劣。

youdao

If businesses, like the pharmaceutical industry, are driven by the need to make a profit, how can we expect them to invest in R&D for diseases of the poor, who have no purchasing power?

如果企业（例如制药企业）一味追逐利润，怎么能指望它们针对缺乏购买力的穷人的疾患投入研发资金呢？

youdao

We will leverage the respective strengths of Chinese and German SMEs in capital, technology, R&D, human resources and market to promote common development.

充分发挥双方在资金、技术、研发、人才、市场等方面的互补优势，促进共同成长。

youdao

This concert hall was owned by an organization called the Daughters of the American Revolution, or D.A.R.

VOA: special.2009.01.25

You can take a derivative of the derivative and you can get the acceleration vector, will be d^2r over dt^2, and you can also write it as dv over dt.

你可以对导数再求一次导,你就可以得到加速度矢量,也就是 d^2 r / dt^2,你也可以写成 dv / dt

耶鲁公开课 - 基础物理课程节选

The most important result from last time was that if you took this r, and you took two derivatives of this to find the acceleration, d^2 r over dt^2, try to do this in your head.

上节课最重要的结论,就是如果你把 r 写成这样,对 r 求两次导就能得到加速度,d^2 r / dt^2,心算一下

耶鲁公开课 - 基础物理课程节选

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Many of the biggest R. and D. labs of the Indian military establishment are clustered around the city, forming a handy source for middle and senior managers.

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