Word · Frequency #28431
hg
汞;水银
a heavy silvery toxic metallic element; the only metal that is liquid at ordinary temperatures
化学符号通常写作 Hg,h 大写
- 1.
n a heavy silvery toxic univalent and bivalent metallic element; the only metal that is liquid at ordinary temperatures;n 100 grams
abbr. 标准德语(High German);手摇发电机(Hand Generator)
百克;abbr. 标准德语(High German);手摇发电机(Hand Generator)
In use
A traditional thermometer uses Hg inside a narrow glass tube.
Because Hg is liquid at room temperature, it was once used in barometers.
Old thermometers containing Hg must be handled carefully.
the abbreviation hg + stands for + noun
这是 hg 的缩写用法,也可表示 Hand Generator(手摇发电机)。
In this dictionary, the abbreviation hg stands for High German.
在这本词典中,缩写 hg 代表标准德语。
numeral + hg + of + noun
hg 在此作单位缩写,表示 hectogram(百克),等于 100 克。
The recipe needs 3 hg of flour.
这个食谱需要 3 百克面粉。
the element hg + be + noun phrase
hg 在此作名词,指汞(mercury),俗称水银。
The element hg is a heavy silvery metal that is liquid at ordinary temperatures.
元素汞是一种在常温下呈液态的重银色金属。
Common mistakes
This recipe needs 500 hg of flour.This recipe needs 500 g of flour.
hg 是 hectogram(百克)的缩写,1 hg = 100 g,所以 500 hg 等于 50,000 g(50 千克)。若要表达 500 克,应使用 g,而不是 hg。
The chemical symbol for mercury is hg.The chemical symbol for mercury is Hg.
化学元素符号区分大小写:汞的符号是 Hg,H 必须大写。小写 hg 是 hectogram(百克)的缩写,不能用来表示汞;中文没有大小写区分,因此容易写错。
Connections
Collocations
- hg thermometer
- 汞温度计
- A common hg thermometer contains a small tube of mercury that rises with heat.常见的汞温度计含有一小管汞,受热时会上升。
- hg barometer
- 汞气压计
- The weather station's hg barometer uses a column of mercury to show air pressure.气象站的汞气压计利用汞柱显示气压。
- hg poisoning
- 汞中毒
- Eating contaminated fish over a long period can lead to hg poisoning.长期食用受污染的鱼类可能导致汞中毒。
- hg exposure
- 汞暴露
- Dental workers may have hg exposure when handling amalgam fillings.牙科工作者在处理汞合金填料时可能会发生汞暴露。
- hg vapor
- 汞蒸气
- Heating mercury produces hg vapor, which is extremely dangerous to breathe.加热汞会产生汞蒸气,吸入极其危险。
Learner notes
Memory Tip
Hg 是水银的元素符号,联想温度计里银色流动的液滴;100克(hectogram)也缩写为 hg,约一小盒酸奶的重量。
Context & Register
语域:formal 常见场景:chemistry、medical testing、industrial safety 作为汞的化学符号(标准写法为 Hg),通常出现在化学式、医学检验和工业安全文件中,正式文体较常见;日常口语一般说 mercury。
Dictionary facts from ECDICT.