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抛射距离越远机构弹力越强、噪音越大，胆小或对声音敏感的犬只应选近距离低噪机型，或先手动训练脱敏

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Unverified声音清晰度与音量存在权衡：音量越大户外越有效但越可能惊吓犬只，室内近距离训练选中低音量款，户外/听障犬训练配合手势或选高音量款90% similar Unverified音量越大触发距离越远越适合大型犬远距离训练，但对同处一室的其他宠物形成干扰噪音；小音量减少交叉干扰但室外远距离训练标记不清88% similar Unverified声音强度越大对犬只召回越有效，但持续高分贝(>90dB)会造成听觉钝化和恐惧回避，训练用途应选可调至60-75dB温和档，仅户外紧急场景才需高强度83% similar Unverified音量越大传播越远越适合户外/远距离训练，但对居家敏感宠物越易造成压力；室内近距离训练30-45分贝足够，无需追求高音量款81% similar Unverified对声音敏感的犬只应选择弹射噪音<60dB的机型，多数弹簧式抛球机弹射瞬间可达70dB以上，会导致胆小犬回避玩具甚至产生恐惧81% similar

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