convexity
用法要点
介词用法
常与介词of连用,表示某物的凸度,如the convexity of a lens;在金融领域,可与in搭配,如convexity in bond pricing。
句型搭配
多用作名词主语或宾语,常见于描述性句子,如The convexity affects the light refraction;也可用于被动语态,如Convexity is calculated mathematically。
语域说明
在学术和科技语境中频繁使用,如数学、物理、金融工程;日常对话较少见,多用于专业讨论或技术描述。
基础例句
The convexity of this mirror makes objects appear larger.
这面镜子的凸度让物体看起来更大。
We need to check the convexity of the lens for better focus.
我们需要检查镜片的凸度以获得更好的对焦效果。
The convexity of the hill makes it hard to climb.
山丘的凸起形状使得攀登变得困难。
高级例句
In finance, convexity measures the sensitivity of bond duration to changes in interest rates.
在金融领域,凸度衡量债券久期对利率变化的敏感性。
The convexity of the optical surface is critical for minimizing aberrations in the lens design.
光学表面的凸度对于最小化透镜设计中的像差至关重要。
Engineers analyzed the convexity of the bridge arch to ensure structural stability under load.
工程师分析了桥梁拱形的凸度,以确保在荷载下的结构稳定性。
高频搭配
verb
adjective
noun
adverb
preposition
phrase
常见错误
convex是形容词,意为“凸的”,而convexity是名词,指“凸度”。这里需要名词形式,所以应使用convexity。
convexity是名词,不能直接用作动词。应使用动词如measure、calculate等搭配,表达测量凸度的意思。
近义词辨析
curvature
curvature泛指曲线或曲面的弯曲程度,可以是凸或凹;convexity特指向外凸起的性质,强调凸面。
The curvature of the road is sharp, but the convexity of the hill makes it stand out.
bulge
bulge通常指不规则的凸起或肿胀,多用于日常语境;convexity更正式,描述规则或数学上的凸状,常见于科技领域。
There's a bulge in the tire, but we measured the convexity of the lens precisely.