1、
2、
Both muscle and satellite cells are in turn surrounded by adult stem cell-like cells.
肌肉和卫星细胞又被类似成体干细胞的细胞所包围.
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3、
Rising stem-inside screw is the most common and preferred design for bronze multi-turn valves.
明杆 - 内螺纹结构对于青铜多回转阀门来说是最通用、首选的结构形式.
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