短语词组短语Footpad Lesions 脚垫损伤footpad reaction 足跖反应;足垫反应footpad swelling 足垫肿胀footpad increment 其差值;差值;取其差值footpad test 足垫试验footpad inoculation 爪垫接种Footpad keratoses 脚底角化Rishadan Footpad 力夏达拦路贼rats footpad 大鼠足跖 返回 footpad