短语词组短语bone -loss 骨丢失bone mass loss 骨量减少local bone mass loss 局部骨质丢失bone mineral loss 骨矿丢失bone mineral loss in space 航天骨矿物质脱失total body bone mass loss 全身骨质丢失prevent and treat bone -loss 防治骨丢失marginal bone loss 边缘骨吸收;骨吸收 返回 bone loss