比起固定龙骨而言，它只能提供零压载（无负重龙骨板）或少量压载（带负重龙骨板），因此在抵抗倾覆和从倾覆中归位方面较为不利
Provides no (unweighted board) or less (weighted board) ballast, compared to a fixed keel, to resist capsizing and ensure recovery from a capsize
环形固定的膜片对振动或震动有抵抗性。
The annular clamped diaphragm is extensively insensitive to jarring or vibration.
螺钉锁定在钢板上使得固定重建对随后可能发生的螺钉松动和脱出的抵抗能力更强。
This locking of screw to plate makes the fixation construct more resistant to failure from sequential screw loosening and pullout.
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