This is a singal fracture that is very small like the width of hair.

这是一种单一骨折，它非常细小只有头发的宽度。

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Remark One or two singal-core cable not allowed laying in iron pipe.

一根或二根单芯电缆不允许敷设在铁质管道中。

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The primary function of RF power amplifier is to amplify the RF singal with high efficiency.

射频功率放大器的主要功用是放大射频信号，并且以高效率输出大功率为目的。

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Vineet Singal (below), age 21, founded a health education program for disadvantaged and low-income patients called, Anjna Patient Education.

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