zjfxw 发表于 2010-3-11 08:55

en 15503中3.17的理解

各位：帮忙看一下，EN 15503中3.17
throttle setting device
arrest device allowing the throttle to be temporarily fixed in and released from any required position to ease working with the machine over a period of time.
这段文字的准确理解是？
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