【摘 要】
：
首先要明确的一点是，可视电话不等于电视电话。 从我们非常熟悉的电视画面说起，电视画面的切换是非常迅速和及时的，观众能够很逼真地看到对方的动作和面容。那么，为什么不搞电视
论文部分内容阅读
首先要明确的一点是，可视电话不等于电视电话。 从我们非常熟悉的电视画面说起，电视画面的切换是非常迅速和及时的，观众能够很逼真地看到对方的动作和面容。那么，为什么不搞电视电话，让对方的图像就像电视画面一样连续可变而逼真呢？是的，这完全可以实现。但是有一个很重
The first thing to be clear is that videophones are not equal to videophones. Speaking from the television screen we are very familiar with, the switching of the TV screen is very rapid and timely, and the audience can see each other’s movements and faces very vividly. So, why not engage in video calls, so that the other side of the picture as continuously variable and realistic TV picture it? Yes, this can be achieved. But there is a heavy one
其他文献
洗澡能除去汗垢油脂，消除疲劳，舒经活血，改善睡眠，有利于身体健康。但随着冬天的来临，我们应该适当地降低洗澡的频率，缩短洗澡的时间，不然，洗澡非但无益于健康，还会洗出一身病来。 次数不宜太多。洗澡次数太多，会把皮肤表面正常分泌的油脂及正常寄生在皮肤表面的保护性菌群全部洗掉，容易引起皮肤瘙痒，皮肤的抵抗力也会减弱，容易患皮肤病。 时间不宜过长。经测定，在淋浴中有50％的三氯甲烷和80％的三氯乙烷变
疫情期间对全国62446位中小学生家长进行在线问卷调查,结果显示:中小学生大多利用智能手机和宽带网络进行在线学习,但还有10％ 的弱势群体学生值得高度关注;大部分家长支持疫情
新冠肺炎疫情背景下,我国包括部属师范院校在内的高校都将“停课不停学”作为维持正常教学活动的重要政策选择,这是一项应急状态下的教育政策创新.从政策过程、政策内容、政
Introduction Circadian clock, an internal timekeeping mechanism, allows a variety of organisms to adapt their physiological and behavioral processes to a ch
Porphyra polysaccharide could exert diverse biological activities such as immunomodulation, antioxidation and antiaging.The purpose of this study was to inv
公司主要从事LCD行业上游材料的生产,主导产品为ITO导电玻璃和中小尺寸彩色滤光片(CF)。公司是国内首家自主掌握STN型ITO导电玻璃生产反术和彩色滤光片核心技术的企业,同时也
This study investigated and compared the change of brain metabolis and the action of aspirin after cerebral ischemia-reperfusion injury (CIRI).Right middle
Fibroblast growth factor 20 (FGF20) is a neurotrophic factor that exerts strong neurotrophic properties in the brain and could significantly enhance the sur
Stroke is the third leading cause of death in adults worldwide.Worldwide, about 5.6 million people died from stroke in 2005, according to the data from WHO.
用GA和BA单独或混合处理剥去内外种皮的枳嫩种,并置于恒温箱中催茅。试验结果表明,GA或BA1000ppm单独处理有明显促进嫩种萌发的作用,与500和1500ppm相比是较佳的处理浓度;而G