vacuum n. (pl. vacuums, vac-ua ) 1.真空;空處,空虛,空白。 2.〔美口〕吸塵器(= vacuum cleaner)。 a low [partial] vacuum低度[未盡]真空。 feel a vacuum in the lower regions 〔戲謔語〕覺得餓。 vi.,vt. 〔美口〕 1.用吸塵器掃除。 2.用真空干燥機(jī)干燥。 adj. 1.真空的。 2.用以產(chǎn)生真空的。 3.利用真空的。 vt. -ize 1.在…內(nèi)造成真空。 2.用真空裝置打掃[干燥]。 3.真空包裝。
Usually the measuring values of these systems are based on the wavelengths of the incorporated laser sources . hence , in order to ensure that the high potential accuracy of these instruments is achieved , the values of their wavelengths in vacuum must be known 通常所量得的數(shù)值是根據(jù)裝置在干涉儀的激光光源的波長所得出的,為確保儀器能達(dá)到其潛在的高精確度,必須知道激光在真空中的波長數(shù)值。