但是你必须记住，通过切瓣降低了球根系的整体高度。

But you do have to remember by butterflying, you are cutting down the overall height of that root ball.

youdao

目的比较准分子激光角膜上皮瓣下磨镶术(LASEK)与多光区准分子激光角膜原位磨镶术(M - LASIK)治疗高度近视的临床疗效。

Objective to contrast the clinical effects of Laser Epithelial Keratomileusis (LASEK) and multi zone Laser in Situ Keratomileusis (M-LASIK) for the treatment of high myopia.

youdao

目的探讨准分子激光上皮瓣下角膜磨镶术(LASEK)治疗超高度近视的安全性和有效性。

OBJECTIVE to investigate the effectiveness and safety of laser subepithelial keratomileusis (LASEK) for the correction of intense myopia.

youdao

That's the harmonic series that's on that, and what the valves do is they shorten and lengthen that vibrating column of air very much like the cello string on the fingerboard.

这就是圆号上的泛音列,活瓣的作用是增长或减短,空气柱的高度,很像大提琴指板上的弦

耶鲁公开课 - 聆听音乐课程节选