A unit vector normal to the plane of t and n, which is the plane of curvature.

所构成的平面的单位向量，该平面为曲率所在的面。

youdao

In order to produce n pentane desorbing agent for molecular sieve dewaxing unit, the refining tests for reformed n pentane oil were carried out by using complexing agents.

为了生产用于分子筛脱蜡装置的正戊烷脱附剂，利用络合化学试剂对切割分离后的重整正戊烷油进行了脱烯烃精制实验。

youdao

The paper introduces the design and application of perforated weir-riser distributor with toothed weir, which is used in the modification of n-paraffin separation unit.

详细介绍了带齿形堰的筛孔溢流盘式分布器在正构烷烃分离装置改造中的设计与应用情况。

youdao

The infiltrators fled the scene after the A.U.-U.N. police unit returned fire, the mission said.

CNN: STORY HIGHLIGHTS

In 2009, a weak market forced Toll to cut prices by 25% on three-bedroom units at its massive 450-unit Northside Piers in Brooklyn, N.

WSJ: Toll Brothers Goes Condo

"They overwhelm a victim's phones so that the bank can't call the victim and the victim can't call them, " says Timothy Ryan, supervisor for the cyber-investigations unit of the FBI's Newark, N.

WSJ: Hack Attack: How to Protect Your Online Accounts