A strong dependence of recombination on the existence of a constant illumination has been observed, and this is shown to be a majorefficiency-limiting factor for this type of devices.
复合过程对光照的存在有强烈的依赖关系，是限制这类器件效率的主要原因之一。
2
A United Nations report says reaching that goal will require major increases in intensive, high-efficiency livestock operations for both meat and dairy production.
联合国的一份报告说，要实现这一目标，就必须大力增加密集高效的畜牧业生产，以生产肉类和奶制品。
3
The inability to produce consistent, accurate, and repeatable software builds has become a major gating factor constraining both quality and efficiency.