常見例句雙語例句So, the basic principles and methods of back analysis of concrete module during operating period are studied.因此，本文首先研究了運行期混凝土彈性模量反分析的基本原理、方法。With the development of our country's highway construction, a lot of bituminous pavement has been close with its designed deadline of operating period, so the maintenance was needed.隨著我國高等級公路建設(shè)的高速發(fā)展，前期建設(shè)的許多瀝青路面已經(jīng)達(dá)到或接近設(shè)計壽命，需要進(jìn)行大規(guī)模的養(yǎng)護(hù)。Analyzing the difference of the same type pump's H-C curve and the variation of H-C curve during operating period, this paper presents a reasonable method of selecting centrifugal pump.本文通過對水泵性能的差異及水泵運行過程中性能的變化兩個主要因素的分析，提出了離心泵的合理選型方法。權(quán)威例句Either way, you should steer clear of companies that report both profits and negative operating cash flows period after period.FORBES: Are Your Stocks Doomed?But its wireline business remained under pressure: revenue fell by 3.6% in the period and operating profit slumped by 90%.ECONOMIST: Broadband in AmericaAlcoa has reduced its smelting capacity and beat estimates when it reported third-quarter results in October, but still booked an operating loss for the period.FORBES: Alcoa Credit Rating Faces Cut To Junk From Moody's 返回 operating period