(physical chemistry) a distinct state of matter in a system; matter that is identical in chemical composition and physical state and separated from other material by the phase boundary
a particular point in the time of a cycle; measured from some arbitrary zero and expressed as an angle
(astronomy) the particular appearance of a body's state of illumination (especially one of the recurring shapes of the part of Earth's moon that is illuminated by the sun)
动词 phase:
arrange in phases or stages
adjust so as to be in a synchronized condition
例句
用作名词 (n.)
The period falls into two phases. 这个时期又可分为两段。
Mercury retrograde periods are phases when conditions are in flux. 水星逆行时期各种客观条件都在不断变幻。
This period of history falls into two phases. 这一段历史分为两个阶段。
The transition process happens in several phases. 转换过程分多个阶段进行。