The first issue, related to ambient temperature, is determining where to locate the sensor.

第一个问题与外界温度有关，即决定将传感器放到哪里。

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A porcelain crucible was heated to a dull red color, placed on the test material, and allowed to cool to ambient temperature.

将置于所测试材料表面的陶瓷坩埚，加热至暗红色然后让其冷却，温度降至室温。

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Halogen spotlights to use more traditional, lower light, more power, increased by exposure to ambient temperature, short life.

传统射灯多采用卤素灯，发光效率较低、比较耗电、被照射环境温度上升、使用寿命短。

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Is at risk due to elevated or freezing ambient temperature in the car seat.

FORBES: New Kids' Car Seat Offers Smartphone Connectivity

By using the bacteria, the two men have found a way to change the liquid into a solid, and to do it at the ambient temperature.

FORBES: FOCUS: 'Microbial Alchemy' Produces Gold From Toxic Chemical

Methanol contains 12.6% hydrogen and is a liquid at ambient temperature, enabling it to be used as a means of temporarily "storing" hydrogen until it is needed.

BBC: Hydrogen's energy promise improves