竖直的英文：
vertical
erect
plumb
perpendicular

参考例句：

In Fig 8-8, the pendulum, consisting perhaps of a large wooden block of mass m', hangs vertically by two cords
在图8―8中，冲击摆是由两条线竖直悬挂着质量为M’的大木块所构成。

vertical sweep driver
竖直扫描激励器

In a vertical or perpendicular line.
垂直地在一条垂直线或竖直线上

Always put the cassette back in its case before storage. Store in a vertcal position
存放之前，记住要将带子放回盒中，并竖直放置。

When a pawn does not take, it moves one square straight forward.
当兵不吃子时它只能向前竖直移动。

A device, such as a plumb line, used in marking the vertical from a given point.
垂规，铅垂线一种装置，如铅垂线，用于从给定点标记竖直方向

A passage between two upright poles through which a skier must go in a slalom race.
路径位于两竖直的杆之间的一通道，滑雪运动员在障碍滑雪赛中必须通过

Either of the two vertical pieces framing a doorway and supporting the lintel.
门框边框门框两边构成门口和支撑过梁的两竖直架中任一个

A vertical gradient in ocean salinity.
(海洋的)盐度跃层海水盐度竖直梯度变化明显的水层

In arm stand dive, on the other hand, the diver must be balanced and straight in a handstand before takeoff.
倒立起跳时，选手在起跳前必须用手支撑使身体保持平衡和竖直。

vertical是什么意思：
n. 垂直线；垂直位置
adj. 竖的；垂直的；直立的；纵向的

vertical integration.
包括从生产到销售各个阶段的纵向联合。

Apeak: In a vertical or almost vertical position or direction.
垂直着(的);竖立着(的):处于垂直或几乎垂直的位置或方向。

vertical sweep driver
竖直扫描激励器

erect是什么意思：
adj. 垂直的；勃起的
v. 建立；竖立；创立

to erect; to rise
竖立

An extremely stiff, erect posture.
过分笔直，僵立的姿态

It is an implant that creates an artificial erection.
那是制造人工生理勃起的移植手术。

plumb是什么意思：
n. 铅锤
adj. 垂直的；完全的
adv. 垂直地；恰恰；完全地
v. 做管道工；用测铅测；探测；（使）垂直；为…敷设水管

This is a plumb wall.
这是一面垂直的墙。

hydraulic plumbing system
液压管路系统

To determine the depth of with a plumb.
测量深度用铅锤来测定深度。