numerous adj. 1.〔修飾單數(shù)集合名詞〕由多數(shù)人形成的,人數(shù)多的。 a numerous army 一支龐大的軍隊。 a numerous class 學(xué)生人數(shù)多的一個班。 2.〔修飾復(fù)數(shù)名詞〕許多的,大群的,大批的。 numerous errors 許許多多錯誤。 3.〔罕用語〕多數(shù)人們的。 4.〔古、詩〕和諧的,有節(jié)奏的。 adv. -ly ,-ness n.
Measurement precision contribute to improving the security class and economic of boiler running and automatic level of whole plant . the smart measurement instrument of the boiler ’ s air flow designed in the thesis and the instrument can make the degree of accuracy get to . firstly , the thesis build the “ velocity - area ” method which is on basis of “ log - tchebycheff ” on the analyzing of basic measure method of boiler ’ s air flow . secondly , model86 averaging pitot tube was selected the right model of flow transducer which can pickoff the differential pressure and static pressure . modelc264 which made in setra system corp . u . s . a was selected as ultra low differential pressure transmitter . a good flow of boiler ’ s air was calculated by offsetting pressure and temperature . finally , numeroscope was designed with z80cpu and other chips 精確的監(jiān)測有助于提高鍋爐燃燒的安全型、經(jīng)濟性,也有助于提高電廠的整體自動化水平。本文設(shè)計的智能化鍋爐風(fēng)量測量裝置能夠?qū)崿F(xiàn)對鍋爐送風(fēng)的精確測量,精度可達。本文首先研究鍋爐送風(fēng)矩形大管道測量理論,提出在流來流量測量測點布置基于“對數(shù)-切比雪夫”法的速度-面積法。