The heart, blood vessels and lymph vessels connect to form a set of closed pipe system.

心脏、血管和淋巴管互相连通，共同组成一套密闭的管道系统。

youdao

Managers of vehicle service centers can now turn to our new thermal pressure relief device to protect against possible damage to their closed pipe systems caused by thermal expansion.

汽车服务中心的经理现在可以使用我们的热压力释放器，防止热膨胀引起的闭合管路系统的毁坏。

youdao

This system adopts auto intelligent control , less maintenance personnel , lower labor intensity ; and adopts closed pipe connection to assure the site tidy , and applies to all scale enterprise .

全系统采用自动化智能控制，维护人员少，劳动强度低；采用封闭式管道连接，确保场地环境整洁，适用于各类规模的相关企业。

youdao

The railway line between Great Malvern and Hereford earlier reopened after a collapsed pipe caused a hole and closed the line.

BBC: New Worcestershire flood defences 'working well'

The Beach restaurant, a favourite for secular types, including foreign aid workers, was closed for three days after police nabbed a woman smoking a water-pipe.

ECONOMIST: Hamas and the peace talks