You'll see why very soon, in such a way that the derivative is this given unit vector u hat.

你很快就会明白为什么,导数dr/ds等于给定的单位u向量。

youdao

ASIP is a signals intelligence sensor payload developed by Northrop Grumman Mission Systems sector's Electromagnetic Systems Laboratory business unit for use on both the U-2 and Global Hawk.

ASIP是一个用于U - 2侦察机和“全球鹰”无人机的信号情报传感器载荷，由诺斯罗普·格鲁曼公司任务系统分部的电磁系统实验室商业部门开发。

youdao

Hamamatsu Photonics gained 6.4% after it was added to the MSCI World Index, while Nidec rose 3.8% on news it will acquire U. S. -based Emerson Electric's motors and controls unit.

日本浜松光电公司在加入到摩根·士丹利世界指数以后，上升了6.4%，而日本电产因收购美国艾默生电气公司的马达业务上升了3.8%。

youdao

The report said information requests by scientists not connected with the Climatic Research Unit, the C.R.U.,were continually rejected.

VOA: special.2010.04.27

It is also buying 145 towed artillery guns from the U.S. unit of U.K-based BAE Systems PLC.

WSJ: India, Boeing in Talks for Helicopter Deals

In China, SSS grew 14%, while both the international unit and the U.S. unit saw a 5% expansion.

FORBES: Yum! Brands' Profit Jumps 73% In Q1 Despite China Concerns

The writer, Richard Morais, responds Your points are noted, but these warnings were issued by the U.K. Foreign Office Travel Advice Unit and the U.S. State Department.

FORBES: Readers Say