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单词
petzval lens
释义
Petzval lens
Petzval lens
[
′pets·väl ‚lenz
]
(optics)
A photographic objective which consists of four lenses ordered in two pairs widely separated from each other, with the first pair cemented together and the second usually having a small air space.
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run of the mill
run-of-the-mill
run-of-the-millly
run-of-the-mine
run-of-the-minely
run-of-week
runology
run on
run-on
run on a bank
run on all cylinders
run one in
run (one) into (some place)
run on empty
run (one) off
run (one) off (one's) feet
run one out of
run (one) out (of some place)
run (one) over
run one over to
run one over with
run one ragged
run oneself into the ground
run (oneself or someone) ragged
run (oneself or something) into the ground
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更新时间：2025/3/17 16:20:15