Gis - based dynamic risk assessment for groundwater nitrate pollution from agricultural diffuse sources 的農(nóng)業(yè)面源硝酸鹽地下水污染動(dòng)態(tài)風(fēng)險(xiǎn)評(píng)價(jià)
It is especially useful for measuring measure weak , scattering and diffuse sources with the highest possible sensitivity 該系統(tǒng)因?yàn)榫邆錁O高的可能靈敏性,故特別適合測量難以測量的、散射的發(fā)散源。
Mms - based instruments are ideal for measuring weak , scattering and diffuse sources and samples because the spectrometer can collect and process far more light through its wide area aperture , without affecting spectral resolution 基于mms技術(shù)的設(shè)備非常適合測量測量難以測量的、散射的發(fā)散源以及樣品,因?yàn)橥ㄟ^一個(gè)大口徑編碼光闌,這種光譜儀就能夠集聚并處理更多的光線,而不會(huì)影響光譜分辨率。
These disks are used to create a diffuse source that is optimal for coupling into fibers and attenuating the overall signal when spectrometer saturation is an issue and other attenuation methods ( such as adjusting spectrometer integration times ) are impractical or undesirable 當(dāng)分光計(jì)的飽和度成為問題或其它衰減方法(如調(diào)整分光計(jì)綜合時(shí)間)不合實(shí)際或不合要求時(shí),這些盤用做散射源,則對(duì)與光纖耦合和衰減所有信號(hào)最優(yōu)。