次组合 meaning in English

sub-assembly

The cast grouping and ordering problem of steelmaking continuous casting hot rolling ( sm - cc ) is a combinatorial optimization problem
摘要炼钢-连铸生产的浇次组合与排序是带有工艺约束的并行机流水车间调度问题。
In the first trial , combination of enzymatic digestion was used to prepare suspensions of spermatogenic cells from adult mouse testis , and then a modified discontinuous percoll gradient centrifugation method ( 15 % , 22 % , 30 % , 40 % , 50 % , 60 % ) was introduced to isolate spermatids from the cellular suspensions . the content of spermatids in each isolated fraction by percoll method was determined by morphology ( wright - giemsa stain ) and flow cytometry analysis , and the viability of spermatogenic cells was assessed by using eosin y exclusion test
在第一部分试验中，首先利用连续3次组合酶消化成年小鼠睾丸制备睾丸细胞悬液，然后经6层非连续percoll梯度离心法( 15 、 22 、 30 、 40 、 50和60 )分离，通过形态学和流式细胞术鉴定南京医科大学硕士学位论文各个percoll组分中精子细胞的含量，并以伊红y排斥试验测定细胞的存活率。