To unify the magnetic field level of the whole area in Marine geomagnetism surveying, the base value of the secondary base station must be reduced to the main base value.

海洋磁力测量多站日变改正中，为了使整个测区磁场水平统一，必须以主站为基准对分站日变基值进行归算。

youdao

The drag reduction of plane-surfaces with V-shaped grooves is given out by direct numerical simulation, and the drag reduction mechanism in the base of the secondary flow theory is suggested.

利用直接数值模拟方法求得平板上V—型条纹表面上的降阻情况，并给出基于二次流动理论的降阻机理。

youdao

This paper presented a new method for quantitatively analyzing the secondary data - base of WPI.

提出一种建立WPI专利文献二次数据库的新方法并对专利文献进行计算机量化分析。

youdao

In later years Moscow became their secondary base, after Peter the Great founded his new capital St Petersburg.

BBC: Inside the Kremlin walls

Dual-shot adds a second layer of colored, transparent or translucent polycarbonate on top of a base layer to produce secondary color blends and depth effects.

ENGADGET: Nokia Lumia 620 announced: 3.8-inch WVGA display, 5MP camera, $249

Although the secondary market is still young, it is routine for companies to halt trading before an IPO to have time to account for its current shareholder base, said a person familiar with the secondary market.

WSJ: Facebook Targeting May IPO