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- The special air condition in high space could cause positive mutation of major traits in progenies of space treatment such as plant height,node length,petiole length and stem diameter,etc. 平均单叶面积和第一雌花节位趋向于正态变异，而且各性状均以有利变异为多。
- There is positive proof that he did it. 有确切的证据证明他做了此事。
- Our teacher has mutation of sounds suddenly. 我们的老师突然语音发生了变化。
- Her behaviour was a positive outrage. 她的行为残暴到了极点。
- I'm positive she told us to meet at noon. 我肯定她是告诉我们在中午见面。
- This charge is a positive charge. 这个电荷是正电荷。
- She shows a very positive attitude to her work. 她工作态度非常积极。
- Can you be positive about what you hear? 你对听到的话有把握吗？
- He has a positive attitude towards life. 他对生活持有积极的态度。
- The number of positive numbers is infinite. 正数的数目是无穷的。
- Are you positive that you saw him? 你肯定你看到他吗?
- Formation or development of a mutation. 变异的形成或者发展
- To undergo or cause to undergo mutation. 经历变化或使经历变化
- Mutation are produced by a number of chemicals. 许多化学试剂能产生突变。
- He was positive that he had seen it in the newspaper. 他肯定他已在报纸上看见过。
- What matter is not innovation, but useful mutation? 二.;任何领域都可以创新三
- There have been positive developments in international relations. 国际关系已逐步改善。
- A new breeding method of space mutation. 一种航天育种的方法。
- High sense mutation of HVR 1 gene was found. （4）HVR1基因有义突变率相当高。
- She was quite positive about the amount of money involved. 她对所涉及的钱数十分肯定。
