曾经有人认为，这些基质颗粒可能是原始的星云尘埃，即形成陨石球粒及其内含物的物质。
At one time it was thought that these matrix grains might be pristine nebular dust, the sort of stuff from which chondrules and inclusions were made.
方法制造兔右股骨粉碎性骨折的动物模型，a组用异体脱钙骨基质颗粒复合骨水泥并表面贴附自体骨渣进行修复；
Methods Forty rabbits were involved in this experiment. Animal model of right femur comminuted fracture was made and randomly divided into four groups.
阿伦德陨星里的陨石球粒和内含物是由球粒陨石基质结合到一起的；这是一种细粒混合物，主要包括铁颗粒和硫化铁的硅酸盐矿物。
Chondrules and inclusions in Allende are held together by the chondrite matrix, a mixture of fine-grained, mostly silicate minerals that also includes grains of iron metal and iron sulfide.
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