Hand-held portable power tools - Measurement of vibrations at the handle - Part 2: chipping hammers and riveting hammers.
便携式手提动力工具。手柄振动的测量。第2部分：凿锤和铆钉锤。
Grip a short iron in your left hand only, and make some chipping swings.
只用左手握住一只短铁，做一些切击的挥杆。
Grip a short iron in your left hand only, and make some chipping swings.
只用左手握住一只短铁，做一些切击的挥杆。
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