mm
mm — 縮寫
1. the short form used in measurements, labels, and notes for millimetre
毫米
書寫中代表長度單位毫米
the short form used in measurements, labels, and notes for millimetre
Mira bought a 6 mm drill bit for the shelf brackets.
Mira 買了一個 6 毫米的鑽頭來裝層架支架。
number + mm before a tool noun
The rain gauge showed 18 mm after the storm ended.
暴風雨過後，雨量計顯示降雨量為 18 毫米。
number + mm for recorded rainfall
The tailor marked a 12 mm hem before cutting the fabric.
裁縫在裁布前先畫出了 12 毫米的折邊。
We used a 35 mm film camera on the school trip.
我們在學校旅行時用了 35 毫米底片相機。
The dentist found a 3 mm gap between the front teeth.
牙醫發現前排牙齒之間有一道 3 毫米的縫。
- millimetre
the full British spelling used when the unit is written out
- millimeter
the full American spelling used when the unit is written out
文法句型
number + mm
mm + noun
用法筆記
It usually comes after a number in measurements and product descriptions. The abbreviation is the same in British and American English even though the full word is spelled 'millimetre' in British English and 'millimeter' in American English.
常見錯誤
mm — 名詞
1. a short written form in chemistry for millimolar, meaning a concentration of one
毫莫耳
書寫中表示毫莫耳濃度
a short written form in chemistry for millimolar, meaning a concentration of one thousandth of a mole per litre
The nurse prepared a 5 mM glucose solution for the cell test.
護理師為細胞測試準備了 5 mM 的葡萄糖溶液。
number + mM in lab concentrations
Our buffer stayed stable at 10 mM during the afternoon experiment.
我們的緩衝液在下午的實驗中維持在 10 mM。
at + number + mM
Jia measured 2 mM calcium in the water sample from school.
Jia 在學校帶來的水樣中測得 2 mM 的鈣。
The chart shows the drug level rising from 1 mM to 4 mM.
圖表顯示藥物濃度從 1 mM 升到了 4 mM。
- millimolar
the full scientific term written out instead of the abbreviation
文法句型
number + mM
mM of + substance
at + number + mM
用法筆記
In science writing, this abbreviation is usually written as 'mM', with a capital second letter. Writers use that form to avoid confusion with 'mm' for millimetre.