| 1. | However, reproduction rates of some insects such as aphids are influenced by nutrition . 然而,一些昆虫的繁殖率,如蚜虫等是受营养影响的。 |
| 2. | Eight steps to improving herd fertility 提高畜群繁殖率的八个步骤 |
| 3. | The venerable master : although the current birth rate is high , how do you know that living beings that are dead doesn ' t outnumber people who are alive 上人:现在人口繁殖率虽高,但你怎知死去的众生不比生存的人多? |
| 4. | Good dams ? the gos is a milky breed and a good dam . in many cases , sows will continue breeding at a greater age than many breeds and hybrids 繁殖率高- - - - - - - - - -格洛斯特郡斑点猪的繁殖性能非常好。无论在什么情况下,母猪比其它的品种和杂交猪种使用年限长。 |
| 5. | Intensifying the problem is the slow reproduction rate of the reptiles . on average , female tuatara mate once every four years , and eggs take between 11 and 16 months to hatch 更糟的是,这种动物繁殖率很低。平均来说,雌性每4年才交配一次,而卵需要11 - 16个月时间孵化。 |
| 6. | A better understanding of follicular dynamics and its regulation is of great importance both for the improvement of animal reproductive productivity and birth control in human beings 摘要了解卵泡发育动态及其调控机理对于提高动物繁殖率和控制人类生育,都具有重要的意义。 |
| 7. | Genetic control is critical for maintaining variability and avoidance of inbreeding , ensuring the long - term viability of captive nonhuman primate colonies 对非人灵长类动物种群实行遗传学控制,对于维持种群的遗传多样性,提高动物长期的生存力和繁殖率,满足医学生物学实验需要具有现实意义。 |
| 8. | Vietnam also has reported recent cases of blue - ear disease . the disease causes reproductive failure in female pigs and breathing difficulties in young pigs , old pigs they also be affected 越南也报告在近期有一些猪蓝耳病的病例。这种疾病使得母猪繁殖率低,小猪呼吸困难,成年猪也会有所影响。 |
| 9. | " whale sharks , like many other shark species , are highly vulnerable to over - exploitation due to their long and low reproductive rate , " commented callum roberts of york university in the uk , who has researched whale sharks extensively in the caribbean 他说, "由于鲸鲨的生命期很长,繁殖率又低,因此和很多其他的鲸类一样,鲸鲨正面临着被过度捕猎的危险。 |
| 10. | The algorithm can implement the diversity of solution , avoid converging local optimal solution , and prevent the possibility of losing optimal solution effectively , by holding some optimal chromosomes in each generation and introducing expectation reproduction rate 通过保留每代最佳的若干染色体以及引入期望繁殖率的概念,本算法可以实现解的多样性,避免收敛于局部最优解,同时可以有效的防止在进化的过程中失去最优解的可能性。 |