液压和气压传动。液力逻辑线路。第2部分：与逻辑符号相对应的供液和排液符号。
Fluid power systems and components. Fluid logic circuits. Part 2: symbols for supply and exhausts as related to logic symbols.
包含液压设备和气动设备，包括泵、电动机、空气压缩机、汽缸、计量表、量具和传动装置。
Contains hydraulic and pneumatic equipment including pumps, motors, air compressors, cylinders, meters, gauges, and actuators.
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