不同杂交中稻绍合间结实率存在显著差异。

There are significant differences in setting rate among different medium hybrid rice combinations.

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批量或金额较大的采购，必须与供货方签订购货合同，购货合间有关条款的协商、谈判，都须有财务人员参加。

Purchase of large batch or sum requires contract signed with supplier, negotiation of which requires presence of financial personnel.

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为了创造出非粘性的黏合材料，壁虎展示了范德华力的方式，分子间吸合或排斥的全部总和。

To create nonsticky adhesive materials, geckos showed the way to van der Waals force, the sum total of attracting or repelling forces between molecules.

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And a sigma bond forms any time you have two orbitals coming together and interacting on that internuclear axis.

当你把两个轨道合在一起,并在核间轴上有相互作用时,就形成了sigma键。

麻省理工公开课 - 化学原理课程节选