“sight extension”的概念、定义、翻译、参考文献-科学参考

单词	sight extension
释义	sight extension [`sīt ik´sten·shǝn] ^ORDNANCE Any device which raises the normal base or mount of a gunsight to provide improved or unobstructed sighting.
随便看	single-sided single-sided amplifier single-signal receiver single-sized aggregate single-stage compressor single-stage pump single-stage rocket single-stand mill single-station analysis single-step operation single-stub transformer single-stub tuner singlet single-theodolite observation single thread single threading single-throw switch singleton single-tone keying single-trip trigger circuit single-tuned amplifier single-tuned circuit single-tuned interstage single-U groove weld single-unit semiconductor device

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