Never place your tree near a heat source, such as a fireplace or portable heater.
让树远离热源，比如壁炉或便携式加热器。
The devices are ideal for portable, low power applications, especially with high source impedance.
上述器件非常适合便携式、低功耗应用，特别是较高源阻抗应用。
Li Battery is the key power source for most of the portable electronic products.
锂电池是移动电话、笔记本电脑、摄像机、军用夜视仪等便携式电子产品的关键动力源。
The battery takes the power source, suits to the portable demonstration.
电池作为电源，适合于便携式显示。
The battery takes the power source, suits to the portable demonstration.
电池作为电源，适合于便携式显示。
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