【摘 要】
:
众所周知,从某种意义上说,人的心脏一旦停止了跳动,那么生命也就到了尽头。国外研究人类生命的专家,通过实验论证得出结论,过快的心脏搏动,是生命过早终结的信号。并由此提
论文部分内容阅读
众所周知,从某种意义上说,人的心脏一旦停止了跳动,那么生命也就到了尽头。国外研究人类生命的专家,通过实验论证得出结论,过快的心脏搏动,是生命过早终结的信号。并由此提醒和劝戒人们:珍惜生命,就应该珍惜每次心跳。这绝不是危言耸听。 在生物界里何以有的长命百岁,有的“昙花一现”?一位就此课题研究了20余年的学者曾
As we all know, in a sense, once the human heart has stopped beating, then life will come to an end. Foreign experts in human life, through experimental proof concluded that too fast heart beat, is the signal of the end of life too early. And thus remind and advise people: cherish life, we should cherish every heartbeat. This is by no means alarmist. In the biological world why some longevity, and some “short-lived”? A study on this subject for more than 20 years have scholars
其他文献
为了能真实有效地反映用户实际使用过程中,电磁风扇离合器与硅油风扇离合器油耗的差异,本文对影响整车燃油经济性结果的主要整车载荷、环境条件、车辆运行工况进行分析研究,制定
为了取得最佳特性状态,碟状天线须制成极为精确的表面形状,但通常都用金属片建造碟状天线,显然难以达到理想要求.不久前,马可尼公司成功地应用玻璃纤维和“晶体”聚酯树脂建
With the evolution of LED manufacture industry,LED efficacy increases around 10% annually in the past years and now it has already been ready to replace mos
针对车用金属催化转化器样品,建立了用6mol/L盐酸溶液浸泡样品,得到的滤液与不溶物分别进行碲共沉淀制备成分析试液后,用ICP-MS法测定贵金属Pt、Pd、Rh含量的方法.经过8家实验
This paper will propose an accelerated lifetime test method for DC or AC supplied electronic control gear for LED modules of outdoor LED lighting products.T
刘德华、梁朝伟、苗侨伟、汤镇业,黄日华,看到这5个名字——“香港无线五虎”,上个世纪八十年代如雷贯耳的名字,是不是把你带入了甜蜜的回忆之中?
结合发动机台架性能试验拆检结果,通过对发动机润滑油中磨粒的监/检测,比较了在线铁谱监测技术与离线铁谱检测技术对发动机磨损状况跟踪监测的优劣.结论认为:采用在线跟踪监测
As LED chip and package continue to improve the luminous efficiency and reliability,the power supply driver starts to play a more important role in a high q
风疹是常见的急性传染病,是引起胎儿先天性畸形的主要原因之一,近年国内对风疹的防治开始有计划地在一定范围内使用风疹疫苗。我市对育龄妇女风疹感染情况尚缺乏资料。为了
明代嘉靖年间,朝政腐败,内忧外患日益严重。江南苏州地区由于地处东南沿海,又是物产丰饶的鱼米之乡,一度倭患严重。曾历任苏州府同知、兵备佥事与苏松兵备道副总兵的任环率