在往年就诊的病例中，有一半的不孕不育家庭的“罪魁祸首”都是男性。
In about half of these cases, male infertility plays a role.
以显性雄性不育小麦为材料，采用改良半姊妹和混合轮回选择两种方案，对同一基础群体C_0进行了四轮选择。
The same basic population C0 had been selected for four cycles with Dominant male sterile wheat by means of the half-sib mating recurrent selection and the mass recurrent selection programmes.
试验表明：该自制药品对体况较好的凉山半细毛羊不育适龄母羊具有一定疗效。
The result shows that this selfmade PMB has a certain level of treatment effect on Linag Shan semifinewool ewes, which are at the breeding age and in good body condition.
试验表明：该自制药品对体况较好的凉山半细毛羊不育适龄母羊具有一定疗效。
The result shows that this selfmade PMB has a certain level of treatment effect on Linag Shan semifinewool ewes, which are at the breeding age and in good body condition.
应用推荐