How important is it to have an even temperature when you're working?
工作时保持恒温有多重要?
Forced air circulation channel, ensuring the even temperature in the working chamber.
强迫式循环风道,确保工作室温度均匀。
Even temperature variations are limited to the open surface and would not exist underground.
甚至气温的变化也局限于露天地表,而在地下则不存在这种变化。
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