The most likely first steam operated conveyor belt was set into operation in 1804 by the British Navy to produce ship's biscuits.

最有可能的第一台蒸汽操作输送带是在1804年投入服务，由英国海军生产船舶的饼干。

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The existing steam condensate recovery facilities of Luoyang Petrochemical Complex can not be operated effectively because of the defects of equipment and management etc.

洛阳石化总厂原有蒸汽凝结水回收设施由于设备和管理等方面存在缺陷，不能有效地运行。

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Open and shut-down is operated by the density variation bet ween condensation water and steam, Condesation water can drive valve directly, featuring precision and reliability.

倒置桶疏水阀的开启和关闭是根据凝结水和蒸汽的密度差来动作的，凝结水可直接驱动疏水阀启闭，其动作准确，可靠性高。

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Today tourist steam trains still use the line, but in the late 19th century cutting-edge technology operated on this line.

BBC: Giant's Causeway's long history of attracting tourists