Perpendicularity
n. 垂直, 直立\\n[機] 垂直
?? 牛津釋義
perpendicularity
n[U].
??? 情景例句
(looking at his calendar) Oh, next Friday is May 4th.
（正在看著日歷）哦，下周五是五月四號了。
The packing must be strong enough to withstand rough handing.
包裝必須很堅固，能承受野蠻裝卸。
Spirits labelled 95 proof contain only about 47 percent alcohol.
強度標為95的酒中含47％的酒精。