div class=trans-pagebutton class=gotoPage data-page=1Page 1button div class=trans-imageimg data-url=documentcbimgcnki-center-of-qinzhou-guangxi-qinzhou-535000-abstract-this-paperhtmlpage=1 data-page=1 class=trans-thumb lazyload alt=Page 1: cbimgcnkinetcbimgcnkinetEditor20190831qzsdea8fb512-1bb0-4696Center of Qinzhou Guangxi Qinzhou 535000 abstract This paper puts forward a model of collaborative graduation loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAQAAAC1HAwCAAAAC0lEQVR42mM8Uw8AAh0BTZud3BwAAAAASUVORK5CYII= data-src=https:reader030fdocumentsnetreader030viewer20220402035e9fedb21553e504dd23e824html5thumbnails1jpg width=140 height=200 divdivdiv class=trans-pagebutton class=gotoPage data-page=2Page 2button div class=trans-imageimg data-url=documentcbimgcnki-center-of-qinzhou-guangxi-qinzhou-535000-abstract-this-paperhtmlpage=2 data-page=2 class=trans-thumb lazyload alt=Page 2: cbimgcnkinetcbimgcnkinetEditor20190831qzsdea8fb512-1bb0-4696Center of Qinzhou Guangxi Qinzhou 535000 abstract This paper puts forward a model of collaborative graduation loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAQAAAC1HAwCAAAAC0lEQVR42mM8Uw8AAh0BTZud3BwAAAAASUVORK5CYII= data-src=https:reader030fdocumentsnetreader030viewer20220402035e9fedb21553e504dd23e824html5thumbnails2jpg width=140 height=200 divdivdiv class=trans-pagebutton class=gotoPage data-page=3Page 3button div class=trans-imageimg data-url=documentcbimgcnki-center-of-qinzhou-guangxi-qinzhou-535000-abstract-this-paperhtmlpage=3 data-page=3 class=trans-thumb lazyload alt=Page 3: cbimgcnkinetcbimgcnkinetEditor20190831qzsdea8fb512-1bb0-4696Center of Qinzhou Guangxi Qinzhou 535000 abstract This paper puts forward a model of collaborative graduation loading=lazy src=data:imagegifbase64iVBORw0KGgoAAAANSUhEUgAAAAEAAAABCAQAAAC1HAwCAAAAC0lEQVR42mM8Uw8AAh0BTZud3BwAAAAASUVORK5CYII= data-src=https:reader030fdocumentsnetreader030viewer20220402035e9fedb21553e504dd23e824html5thumbnails3jpg width=140...