农业和林业用拖拉机和自驱动机械。驾驶室环境。第4部分：空气过滤元件试验方法。
Tractors and self-propelled machines for agriculture and forestry - Operator enclosure environment - Part 4: air filter element test method.
空气制动系统。气压作动装置。第2部分：制动室楔式制。
Air braking systems - pneumatic actuator - part 2: brake Chambers, technical data for wedge brake.
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