In the 1970s, the rigorous mathematical work of E. F. Codd and others created the now-ubiquitous relational database model.

年代，E . F . Codd与其他一些人通过严格的数学工作创造了现在无处不在的关系数据库模型。

youdao

The U. S. Air Force also will operate an F-35 variant, the a model, a conventional takeoff-and-landing fighter.

美国空军也将经营新的F - 35的变种A型，一种传统的起飞和着陆战斗机。

youdao

Unlike many observers, Hendrix has high hopes for the late, over-budget F-35 — particularly the B model, which has been the most troubled of the three variants.

与许多观察员不同，亨德里克斯对F-35寄予厚望-特别是B型，此机型一直是三个变化中最麻烦的一种。

youdao

Under Siilasmaa's leadership, F-Secure has created a wireless-security model that has attracted major players like Cisco, Hewlett-Packard and Nokia.

CNN: Virus protection coming for wireless users

Meanwhile, a high-performance model that's definitely headed to Lexus showrooms is the 2008 IS-F sports sedan.

FORBES: Magazine Article

Ford and Honda capture two model-level awards each, with Ford receiving awards for the all-new Fiesta and F-150 LD and Honda receiving awards for the Ridgeline and redesigned Odyssey.

FORBES: Cars Drivers Love Best - New Report Reveals Top-Ranked Rides