“panchratic eyepiece”的概念、定义、翻译、参考文献-科学参考

单词	panchratic eyepiece
释义	panchratic eyepiece^OPTICS A telescope eyepiece whose magnifying power can be varied by moving the erecting lens while keeping the focus at infinity.
随便看	half set half-shade plate half-shift register half-side formulas half-silvered surface half space half step half-subtracter half tap half thickness half-through arch half tide half-tide basin half-tide level half-timbered half time halftone halftone characteristic halftone contact screen half-track half-track tape recorder half-value layer half-value period half-value thickness half-wave

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