| 释义 |
diphasic, a.|daɪˈfeɪzɪk|
[f. Gr. δι- (di-2) twice + ϕάσις appearance, phase + -ic.]
Characterized by having two phases: spec. (a) used of an electric variation of which the period of duration is divided into two stages, one positive and the other negative; (b) marked by two phases or stages (e.g. of growth); (c) consisting of two phases of matter (solid, liquid, or gas).
1881J. S. Burdon-Sanderson in Phil. Trans. CLXXIII. 7 The diphasic character of the variation..is due to the interference of the opposite electromotive actions of the upper and under cells. 1900Dorland Med. Dict. 206/1 Diphasic, doubly varied; said of electric currents of action in muscle. 1932J. S. Huxley Probl. Relative Growth ii. v. 70 ‘Diphasic’ mammals or birds such as arctic fox,..herons, owls, etc. 1936Discovery Sept. 291/2 The diphasic wave that accompanies muscular and nervous activity. 1940Chambers's Techn. Dict. 247/2 Diphasic, (of certain Trypanosomes) having a life-cycle which includes a free active stage. 1956Nature 11 Feb. 280/1 Protozoa of this group [sc. Trypanosomidæ] being usually cultivated on complex diphasic media. |