| 释义 |
perpendicularly, adv.|pɜːpənˈdɪkjʊləlɪ|
[f. perpendicular a. + -ly2.]
In a perpendicular manner.
1. Directly up or down, vertically.
1555Eden Decades 94 The soonne hauinge his course perpendiculerly or directly ouer the same. 1605Shakes. Lear iv. vi. 54 The altitude Which thou hast perpendicularly fell. 1725De Foe Voy. round World (1840) 333 It rose about two fathoms perpendicularly. 1885Spectator 8 Aug. 1045/1 The trees..grow perpendicularly for 100 feet before the branches commence.
†b. fig. Directly. Obs.
1658J. Jones Ovid's Ibis 48 Gods presence is everywhere but more perpendicularly in his Temple. 1688Norris Theory Love Pref. 4 To write nothing but what is directly and perpendicularly to the Point in hand.
2. Geom. At right angles to some line or plane.
1570Billingsley Euclid i. Post. iv. 6 A right angle is caused of one right lyne falling perpendicularly vppon an other. 1667Primatt City & C. Build. 159 A right Line drawn cuts the Line given perpendicularly. 1703Moxon Mech. Exerc. 208 You must not hold the Blade of this Tool perpendicularly before the Work,..but aslant. 1879Cassell's Techn. Educ. vi. 349/2 Cogs or pins placed perpendicularly to the face of the wheel. |