The principle of intracavity laser absorption and the relationship between gas concentration and the laser build-uptime is outlined.
介绍了掺铒光纤激光器内腔吸收谱的基本原理,以及激光激射延迟时间与气体浓度的关系。
2
"The squirrel took a lot of time to buildup enough courage to snatch the nut," she said.
“松鼠花了很长时间才鼓起足够的勇气去抢坚果。”她说。
3
The strategic regulation of evening body reserves is also likely to incur additional costs, as nightingales must spend more time foraging in order to buildup larger body reserves.