medium n. (pl. -dia ) 1.媒介物;傳導(dǎo)體;媒質(zhì),基質(zhì),介質(zhì),介體;中間物;環(huán)境、生活情形。 2.手段,方法;媒介;〔常作 pl.〕宣傳工具;傳播媒介〔指報刊、廣播、電視等〕。 3.中間,中庸;【數(shù)學(xué)】中數(shù),平均;【邏輯學(xué)】中名辭;【生物學(xué)】培養(yǎng)基,培養(yǎng)液;顏料溶解液。 4.女巫,降神者。 5.【戲劇】(射火燈燈前的)隔板。 6.(紙張的)中號尺寸;〔pl.〕中型轟炸機(jī)。 mass media 大眾傳播媒介;宣傳工具。 the happy medium 中庸。 the circulating medium = the medium of circulation 通貨。 adj. 中等的,中級的,普通的;平均的。 medium quality (中級)物品。 a medium bowler 【板球】(速球與緩球之間的)中球投球員。 by [through] the medium of 通過,以…為媒介。 medium of advertisement 廣告媒介〔指報刊等〕。 medium of exchange 交換媒介;貨幣;支票。
The hot dry rock geothermal energy is a r . ew clean energy and have excellent development prospects , but is not yet exploited on large - scale in our country then to mankind : the theories and technique of the heat extraction all belong to the new task in the new field , and already have a strong appeal to the international technology worker , and already have obtain certainly achievement , on the basis of study by our predecessors , this paper do the as follows work , acquire the following main result : lx present a many fields coupling mathematics model for solid - flow - heat of 3d blocked medium in hdr 高溫巖體地?zé)崾俏覈灾寥祟惿形创笠?guī)模利用而又極具廣闊開發(fā)遠(yuǎn)景的新的潔凈能源,對其進(jìn)行開發(fā)利用的理論與技術(shù)都屬于新型領(lǐng)域的新型課題,已經(jīng)吸引了大批的國內(nèi)外科技工作者的投入,并取得了一定的成果。在前人研究的基礎(chǔ)上,本文做了如下工作,獲得了如下主要成果: 1 、建立了高溫巖體地?zé)衢_發(fā)的塊裂介質(zhì)固、流、熱多場耦合數(shù)學(xué)模型,模型控制方程包括完全耦合的變形方程、滲流方程、熱傳導(dǎo)與對流方程,描述了熱儲層的非線性特性。
In order to exhibit the application of the method of porous media macroscopical geometric classification and minimum energy dissipation , the combination system between one - dimension pipeline media and three - dimension block media is tried to simulate the destroying and developing process of soil piping erosion 為了進(jìn)一步展示多孔介質(zhì)宏觀幾何分類方法及最小能量耗散原理的應(yīng)用,文中還嘗試采用具有一維性質(zhì)的管道介質(zhì)與具有三維性質(zhì)的塊體介質(zhì)組合體系進(jìn)行了土體管涌破壞發(fā)展過程的模擬。