Whether these stories are cartoons or jokes , told by a slapstick comedian or a cross talking team , they appeal to people everywhere as funny stories , because they have a note of reality to them , and the unexpected punch line is quite funny 无论这些故事是漫画还是笑话，是由演滑稽戏的喜剧演员表演的，还是由搭档的相声演员讲的，它们都十分地受人喜欢，因为它们贴近生活，而且里面那些出人意料的妙语十分有趣。
The relevant test and research show that the ac - driving circuit functions excellently , realizing ac driving and restraining the cross talk , and the lifetime of oled can be improved greatly . we also find the luminance efficiency of oled under ac - voltage driving is lower than dc - voltage driving Oled直流驱动和交流驱动的对比实验结果发现:交流驱动可以大幅度地提高oled的发光寿命,但是交流驱动的发光效率比直流驱动有所降低。
Secondly , when several adsl services are delivered on one cable , or there is other high - speed transmission services like hdsl or isdn , the inter - link cross talk will influence the performance and transmission rate adsl . this will result in a reduction in transmission rate or distance , and in turn affect the commissioning rate of adsl 其次，在同一条电缆中开多条adsl业务，或者存在其他高速传输业务，例如hdsl 、 isdn时，线路间的串扰将影响adsl的业务性能和传输速率，其结果是adsl传输速率下降或者其最大传输距离缩短，影响了adsl的开通率。
Although adsl comes with new digital processing , coding , modulation and error correction technologies , it is also faced with various challenges out of subscriber lines , such as background noise , impulse noise , insertion loss , cross talk , wire size variations , bridge tap , line joints and line insulation , etc . all those factors tend to produce adverse impacts on the performance of high - speed transmission services . firstly , the insertion loss of copper lines increases in proportion to the length of lines 虽然adsl采用先进的数字信号处理技术、编码调制技术和纠错技术，但是在推广adsl业务时，用户线路的许多特性，包括线路上的背景噪声、脉冲噪声、线路的插入损耗、线路间的串扰、线径的变化、线路的桥接抽头、线路接头和线路绝缘等因素将影响高速率传输业务的性能。
It is proved through tests that on one cable , the maximum cross talk comes from a basic unit that is composed of 25 twisted pairs . however , the cross talk of one twisted pair to other basic units is not quite remarkable . so , the cross talk between twisted pairs in one basic unit is the major factor deciding the commissioning rate of adsl services 测试表明，在同一电缆中，以25对双绞线为一组的基本单位内的线路串扰最大，而一对双绞线对不同基本单位内的线路串扰较小，所以同一基本单位内线对之间的串扰是影响adsl业务开通率的主要因素。
