Dewpoint hygrometers provide an absolute measurement of humidity and therefore are essentially self-calibrating . 露點(diǎn)濕度計(jì)可提供濕度的絕對(duì)測(cè)量值,因此它基本上是自動(dòng)標(biāo)定的。
Methodology for absolute measurement is proposed by using an outside installation mechanism in laser tracking measurement system , which has an important reference value in practicality in high accuracy assembly and inspection of large - scale mechanical field . spherical tracking servo mechanism " s model described in this paper not only is a new thought but also have much reference value in the mechanical design and other industrial machines design 本文提出的外置式激光跟蹤測(cè)距系統(tǒng)應(yīng)用于無(wú)導(dǎo)軌曲線測(cè)量的設(shè)計(jì)方法在大型機(jī)械現(xiàn)場(chǎng)組裝與安裝中具有較高的參考價(jià)值和實(shí)用價(jià)值,提出的球形跟蹤伺服機(jī)構(gòu)的設(shè)計(jì)思想,不僅簡(jiǎn)化了伺服機(jī)構(gòu),對(duì)跟蹤伺服機(jī)構(gòu)的設(shè)計(jì)提供了新思路,而且對(duì)機(jī)器人設(shè)計(jì)及其他工業(yè)領(lǐng)域機(jī)構(gòu)設(shè)計(jì)都具有一定的參考價(jià)值。