The design and construction of YH200-JN submergble and hydraulic big loading arms for light and heavy oil are reasonable and reliable.
JN型浸没式内液压轻油大鹤管和高位重油大鹤管的设计、制造是合理的、可靠的。
This paper makes an introduction of the operating principle and trial application of the new pneumatic loading arms that can meet the need mentioned above.
本文介绍了能满足以上要求的新型双直线气动鹤管的工作原理和试验应用。
Day and night the giant arms of the cranes move about, loading and unloading cargo.
吊车的巨臂日夜移动，装货卸货。
Day and night the giant arms of the cranes move about, loading and unloading cargo.
吊车的巨臂日夜移动，装货卸货。
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