diffusion n. 1.散布,發(fā)散。 2.傳播,普及。 3.冗長。 4.【化學(xué)】滲濾。 5.【物理學(xué)】擴(kuò)散,漫射。 the diffusion of knowledge 知識的傳播。 diffusion of speech 演說的冗長。 diffusion of light 光線的漫射。
And the diffusion coefficient of leakproof laminate is tested to get the diffusion time in seawater , which shows that the properties of leakproof laminate can meet the technology requirements of leakproof in two years 同時測定了防滲漏層的擴(kuò)散系數(shù),確定了防滲漏層抗人工海水的擴(kuò)散時間,結(jié)果表明防滲漏層可達(dá)到防滲、抗?jié)B2年的技戰(zhàn)術(shù)指標(biāo)。
The performance of devices is directly decided by the impurity distribution in the diffused region , and the impurity distribution may be affected by the material thermal properties , the mechanism of diffusion , the power of laser and the diffusion time 激光誘導(dǎo)擴(kuò)散過程中,基片的熱物理特性、擴(kuò)散源的擴(kuò)散機(jī)理、激光束的功率大小和擴(kuò)散時間以及光束的聚焦?fàn)顩r等等,都會對擴(kuò)散結(jié)果產(chǎn)生重要的影響,而擴(kuò)散層的雜質(zhì)分布情況將直接決定器件的性能指標(biāo)。
Thus , the conclusion is drawn : when the diffusion coefficient of cf is invariable and the diffusion time is under a certain range , the beginning corrosion time of the steel in the corner of the rectangular section is independent of the size of rectangular section ; ( 4 ) through the numerical value calculation of rectangular section , the law is found of the influence on modifying coefficient of rectangular section of the thickness of protection layer of concrete and diameter of the steel and the thickness of cf on the surface of concrete , based on which practical calculating method of beginning corrosion time of the steel in the corner of rectangular section is set up 從而得到結(jié)論:在氯離子擴(kuò)散系數(shù)一定的情況下,在一定時間范圍內(nèi),矩形截面邊角區(qū)域鋼筋的初始銹蝕時間不依賴于矩形截面的截面尺寸; ( 4 )通過矩形截面邊角區(qū)域鋼筋初始銹蝕時間的計算,分析了保護(hù)層厚度、鋼筋直徑、混凝土表面氯離子濃度對修正系數(shù)的影響,并在此基礎(chǔ)上建立了氯離子侵蝕下矩形截面邊角區(qū)域鋼筋初始銹蝕時間的實用計算方法。
In this paper , we computed and found the main parameter for facture of ti : linbo3 waveguide , by the function of ti diffusion profile in linbo3 , and the waveguide mode ' s cut - off condition . the parameters include waveguide width : 8 m , titanium film thickness : 50 ~ 60nm , index change : 0 . 006 , diffusion temperature : 1050 and diffusion time : 9 ~ 10 hours 本文從ti擴(kuò)散特性和波導(dǎo)導(dǎo)模截止條件入手,計算并確定了制作單模ti linbo _ 3波導(dǎo)的主要參數(shù),如:波導(dǎo)寬8 m , ti膜厚50 60nm ,擴(kuò)散溫度1050 ,擴(kuò)散時間9 10h等。