| 1. | Sterility is some permanent factor preventing procreation .
不育是阻碍生殖的一种永久性因素。
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| 2. | A major barrier to interspecific hybridization is sterility in the f1 progeny .
种间杂交的主要障碍是F1代的不育性。
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| 3. | These are obvious implications for the design of other methods of producing male sterility .
这些显然对设计产生雄性不育的新方法都有启发。
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| 4. | With plants we have conclusive evidence that the sterility of crossed species must be due to some principle .
在植物方面，我们已有确实的证据，表明杂交物种的不育性一定是由于某种原理而起。
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| 5. | Hysterotubography in the diagnosis of sterility
子宫输卵管造影在不孕症诊断中的应用
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| 6. | The samples also passed the sterility test
样本同时亦经化验证实不含细菌。
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| 7. | Hybrid sterility is sometimes overcome by polyploidy
有时可用多倍性来克服杂种不育性。
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| 8. | Advanced study and utilization of the male sterility in cotton
棉花雄性不育研究和应用进展
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| 9. | The various causes of female sterility are
女性不孕症的各种原因是
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| 10. | The various causes of male sterility are
男性不育症的各种原因是
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