Translation guide
Expressing the idea of a temperature that stays the same, whether in everyday life, science, or technical contexts.
Describing a temperature that does not fluctuate, often in rooms, storage, or processes.
The most common and versatile way to say 'constant temperature'. Used in both everyday and technical contexts.
この部屋は一定の温度に保たれている。
This room is kept at a constant temperature.
ワインは一定の温度で保存する必要がある。
Wine needs to be stored at a constant temperature.
Literally 'constant temperature', often used in technical or scientific contexts, or in compound words like 恒温槽 (constant temperature bath).
恒温槽でサンプルを加熱する。
Heat the sample in a constant temperature bath.
A more descriptive phrase meaning 'the temperature is constant'. Often used in explanations.
この装置は温度が一定に保たれる。
This device maintains a constant temperature.
Referring to a comfortable indoor temperature, often around 20-25°C.
Means 'room temperature' or 'normal temperature'. Commonly used for food storage, chemical reactions, etc. Note: it implies a stable, moderate temperature, not necessarily strictly controlled.
この薬は常温で保存してください。
Please store this medicine at room temperature.
Describing appliances or systems that maintain a set temperature automatically.
Means 'with temperature control function'. Used for appliances like air conditioners, heaters, etc.
このエアコンは温度調節機能付きで、一定の温度を保てる。
This air conditioner has a temperature control function and can maintain a constant temperature.
Used in contexts like museums, laboratories, or storage requiring both temperature and humidity control.
A set phrase meaning 'constant temperature and humidity'. Common in technical specifications.
この倉庫は恒温恒湿に保たれている。
This warehouse is kept at constant temperature and humidity.
一定の温度 is the everyday phrase for 'constant temperature'. 恒温 is more technical and often appears in compound words like 恒温槽 (constant temperature bath) or 恒温動物 (warm-blooded animal). Use 一定の温度 for general purposes.
一定の温度で保存する
store at a constant temperature
恒温槽
constant temperature bath
常温 (じょうおん) means 'room temperature' or 'normal temperature', not necessarily a strictly controlled constant temperature. It implies a comfortable, stable ambient temperature. If you need to emphasize unchanging temperature, use 一定の温度.
常温で保存
store at room temperature
Loanword 'thermostat'. Used for the device itself or systems that use one.
サーモスタットで室温を一定に保つ。
Keep the room temperature constant with a thermostat.