The effects of the atmosphereson the process, degradational temperatures, degrees of degradation, kinetics of reaction and the difference of the reactive mechanism have been analysed.

降解溫度、降解率和動(dòng)力學(xué)參數(shù)的影響日韩福利在线视频播放网站，分析了兩者降解機(jī)理的可能差別。

Coke wastewater is typically toxic difficult degradational pollutant.

焦化廢水是典型的有毒難降解廢水。

Since 1962, when Gross and Lapiere discovered the first MMPs-collagenase, man had discovered various of MMPs in succession, where MMP-2 has a strong degradational effect on extracellular matrix, it is secreted bymacrophage, smooth muscle cells and endothelial cells and so on.

自從 1962年 Gross和 Lapiere發(fā)現(xiàn)第一種基質(zhì)金屬蛋白酶一膠原酶以來(lái)91在线视频看看，人類陸續(xù)發(fā)現(xiàn)了很多種基質(zhì)金屬蛋白酶，其中的MMP—2對(duì)細(xì)胞外基質(zhì)具有極強(qiáng)的降解作用日韩人妻一级毛片基地，它由巨噬細(xì)胞AV天堂久久天堂色、平滑肌細(xì)胞以及內(nèi)皮細(xì)胞等分泌，在動(dòng)脈粥樣硬化斑塊中憎多時(shí)降解纖維帽及基底膜的膠原等基質(zhì)成分精品视频在线免费观看，是使纖維帽變薄及加速動(dòng)脈粥樣硬化的重要因素之一一级做a爰A片在线观看。

With a study of plant community succession on 5 stocking rates,herbage utilizational efficiency and risk-benefit balance,it is suggested the sustainable development should follow:(1)no degradational principle of rangeland,(2)the maximum herbage utilizational efficiency,(3)the risk-benefit balance,When stocking rate was no more than 2.67 sheep/hm2,the proportion of grasses and plant biodiversity index and evenness were increased based on Artemisia frigida and short-grass rangeland.

草地畜牧業(yè)可持續(xù)發(fā)展的三大生物經(jīng)濟(jì)原則為草場(chǎng)不退化原則、最大生物學(xué)效率原則和風(fēng)險(xiǎn)-利潤(rùn)權(quán)衡原則：(1)草場(chǎng)不退化原則中文字暮-色哟哟。在冷蒿小禾草退化草原上97国产精品免费视频，暖季期間1.33～2.67羊/hm\+2的放牧率下可使其發(fā)生恢復(fù)演替，禾草的比例增大青青操五月丁香91，植物多樣性指數(shù)和均勻度指數(shù)均有所提高毛片一级A黄色片，從而達(dá)到利用式改良的目的；相反白白在线观看永久免费视频，若繼續(xù)重牧或過(guò)牧亚洲一区久欧美一区日韩，放牧綿羊喜食的植物種類將進(jìn)一步減少，植物多樣性指數(shù)也有所降低看黄色大视频网站全在线观看。