The uncertainty of wringing effect is 6.9 nm, which can be determined by wringing the same gauge block on the base plate repeatedly. The uncertainty of optical components can be estimated by wave-front errors of each components, λ/10~ ...
If you go out in the desert for long without water, the thirst can drive you mad.
I want some planks that are two inches thick.
She quickly calculated the tip to be $45.00 on the restaurant tab of $110.50, apparently using new math.
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DiQt（ディクト）
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