| 摘要 |
A gasoline powered internal combustion engine is directly and rigidly mounted to the frame of the portable chain saw such that upon operation of the engine the frame means vibrate at a disturbing frequency W. A handle in the form of an elongated, homogeneous, flexible member has at least one end thereof rigidly secured to the frame means. This handle, as a consequence of its material composition, of its shape and of the manner of its connection to the frame means, has a natural vibratory frequency Wn, such that W > 2ROOT 2.
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