That is, all the availablehydrogen bonds are formed between neighboring pairs.
就是说,所有可能的氢键,形成于相邻的一对结构单元间。
2
Nuclear reactions in such a star's core, the source of power for nearly its entire life, deplete the availablehydrogen, then the helium.
恒星一生的能量来源,几乎都来自中心的核反应,过程中会耗尽所有可用的氢,然后是氦。
3
That process – usually 65 to 75 per cent efficient – should be sufficient to plug the gap until renewable sources of hydrogen become available, he says.