Besides, the shell unit was divided reasonably. The key and difficult technologies were introduced during the process of construction.

同时合理进行网壳单元划分，并详细阐述拱壳结构施工过程中的重点难点及关键技术。

youdao

Based on the field survey and indoor analysis, geological mapping unit for Fuping surface shell rocks is built, and the unit is divided into upper and lower parts.

依据野外调查资料和室内化学分析，组建了阜平表壳岩的填图单元，单元分为阜平表壳岩上部和阜平表壳岩下部岩石。

youdao

The double shell side heat exchanger for use in hydrogenated unit is divided into two kinds of flange type and thread lock ring type.

加氢装置用双壳程换热器分为法兰式和螺纹锁紧环式两种。

youdao

Case in point: Oil majors like Exxon Mobil, Chevron, ConocoPhillips, BP 's BPAmerica and Shell Oil USA, a unit of Royal Dutch Shell.

FORBES: Magazine Article

The removable shell on our unit was bright matte yellow.

ENGADGET: Nokia Lumia 820 review: a less expensive option for the Windows Phone crowd

The GameChanger unit of Shell, which seeks out new disruptive technologies for the oil giant, is about to test if Knack can help it identify innovators.

ECONOMIST: The gamification of hiring