Word · Frequency #25146
headroom
净空；净空高度；头顶空间
核心释义
The clear vertical space above one's head or beneath a bridge, doorway, etc.; height for a person's head.
- 1.
某人头顶上方的垂直净空(如隧道、门口等)；头部的空间。
The vertical clearance above someone's head, as in a tunnel, doorway etc; room (space) for one's head.
- 2.
从上到下的垂直测量,例如桥下的净空高度。
The vertical measurement, top to bottom, for example for clearance under a bridge.
- 3.
系统无失真地重放响亮声音的能力；动态余量。
The ability of a system to reproduce loud sounds free of distortion; dynamic headroom.
- 4.
算法实际性能与其最大可能性能之间的差距。
The distance between the actual performance of an algorithm and its maximum possible performance.
- 5.
headspace 的同义词(“容器内物品顶部与密封件之间的空间”)。
Synonym of headspace (“space between the top of the contents of a container and its seal”).
动态余量；性能余量；性能裕度；顶空；容器上部空间；某人头顶上方的垂直净空(如隧道、门口等)；头部的空间。；从上到下的垂直测量,例如桥下的净空高度。
用法In use
There is plenty of headroom in the back seat of that SUV.
用法提示：headroom在此句中作名词，指车内乘客头顶上方的垂直空间，即净空高度。
The bridge has a headroom of only 12 feet, so trucks cannot pass.
用法提示：headroom在此句中作名词，指桥梁下方允许车辆通过的高度空间。
This amplifier provides enough headroom to handle sudden loud passages without distortion.
用法提示：headroom在此句中作名词，指音响设备在处理大信号时不失真的储备能力。
headroom for sth
headroom 指头顶或上方的垂直空间，通常为不可数名词。
There is enough headroom for the truck to pass under the bridge.
桥下有足够的净空高度，让卡车通过。
give sb/sth headroom
此结构中 headroom 可引申为“余地、空间”，常用于商业或技术语境。
相关词与表达Connections
搭配Collocations
- low headroom
- 低净空；净空不足
- The sign warns drivers of low headroom under the bridge.标志提醒司机注意桥下净空低。
- adequate headroom
- 足够的净空高度
- Make sure there is adequate headroom for the truck to pass through the tunnel.确保隧道内有足够的净空高度让卡车通过。
- dynamic headroom
- 动态余量
- This speaker has plenty of dynamic headroom, so it handles loud music cleanly.这款音箱有充足的动态余量，因此能干净地处理响亮的音乐。
- provide headroom
- 提供净空（空间）
- The new ceiling design provides more headroom in the basement.新天花板设计为地下室提供了更多的净空。
学习提示Learner notes
记忆技巧Memory Tip
把 headroom 拆成 head（头）+ room（空间）：进门时头顶到门框之间要留出“头部空间”，净空高度就是这个留给头的空间。
语境与语域Context & Register
语域：neutral 常见场景：civil engineering、architectural design、road and bridge clearance headroom 表示“顶端垂直净空”时通常出现在建筑、土木工程和交通设施说明中，语气中性，多用于书面或技术性描述，口语中较少单独使用。
语法说明Grammar Note
不可数名词
发音与拼写Pronunciation & Spelling
room, bedroom, broom, groom and bloom all contain the -oom spelling and share the final /uːm/ sound with the second syllable of headroom; bedroom also has the same stress pattern. 'head' shares the first syllable and spelling, but its /hed/ sound is not part of the final sound match.
一起学习词形Learn the forms together
页面下方列出了常见词形变化。学习时注意它们在句子中的语法位置。
Dictionary facts from ECDICT, WIKTIONARY.