您要查找的是不是：
- 系system
- 他出身于一个古老的家系。He descended from an ancient stem.
- 家系stemma
- 家系调查family line investigation
- 家系，血统Ancestry or lineage.
- 他的家系一直可以追溯到十世纪。His family can trace its history back to the tenth century.
- 母系家系maternal genealogy
- 同族家系A pure line.
- 家系的genealogical
- 家系决定parentage determination
- 按家系[法] per stirpes
- 家系区family plot
- 家系学[医] genealogy
- 家系图pedigree chart
- 雄性家系male parentage
- 优良家系superior family
- 家系子代family progeny
- 家系选育family selection
- 家系研究family study
- 家系测定family test
