The top of the bulb CD must be at a lower level than mark B.

球管CD的顶应低于标记B的水平面.

辞典例句

CTDI was reduced and X - ray tube efficiency is improved.

它降低了 X 线剂量指数,提高了球管效率.

互联网

The tube is the most expensive and consumable core part in spiral CT.

球管是CT中最昂贵的消耗性核心部件,由管芯、管套和配套的油循环冷却系统等组成.

互联网