transportable fire extinguisher是什么意思

用法例句

At the same time it suggests that adopt a new type of a group of chains car pusher for an increase in output in our company.

通过对开滦钱家营矿业公司操车系统的现状分析,认识到进行改造的必要性,结合现场情况和当前操车发展趋势,并针对原系统的主要缺陷,提出2种改造方案,建议采用新型组链式推车机,以确保矿井的提升增产。

The developement and reform of the pusher at the entrance of mine;

井口推车机的研制与改造

The improved hydraulic system of the pusher used in mine;

矿用推车机液压系统改进

Stylistic Beauty in The Red Wheelbarrow;

《红色的手推车》之文体美