裸土区域：苗床适宜一种牢固，疏松连续的土壤。
Bare Soil Areas: a firm, crumbly consistency to the seedbed is preferred.
瘦肉型猪致密型与不连续型结缔组织比例较高，梅山猪则多为疏松型与连续型。
There was a majority of substantial or disconnected connective tissue type in Lean pigs .
材料和方法：对连续40名患原发性骨质疏松和椎体骨折的病人施行椎体后凸成形术，20人使用CaP骨水泥，20人使用PMMA骨水泥治疗。
Materials and Methods. Kyphoplasty was performed in 40 consecutive patients with primary osteoporosis and painful vertebral fractures, 20 received CaP-cement, 20 were treated with PMMA-cement.
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