爷爷今年75岁，总说：“饭后一支烟，赛过活神仙。”可是，吸入大量尼古丁对身体非常不好。我很担忧爷爷的健康，决定帮他戒烟。 先启动A计划：劝。我信心满满地走进爷爷的书房，盯着他手中的烟，迅速抽走了。爷爷猛地抬头，睁大眼睛望着我，像是受了惊的兔子：“你做什么呢？” 我斩钉截铁地说：“爷爷，您知道吗？烟中含有大量尼古丁，吸烟时会从呼吸器官流入肺部，严重伤害身体，会让人得肺病。”爷爷满不在乎，轻描淡写
The extraordinary light transmission through a 200-nm thick gold film when passing through different subwavelength hole arrays is observed experimentally. The s
Two-dimensional numerical research has been carried out on the ablation effects of titanium target irradiated by intense pulsed ion beam (IPIB) generated by TEM
This paper reports the fabrication and test of a high-Tc SQUID planar gradiometer which is patteed from YBCO thin film deposited on a SrTiOs bicrystal substrate
We present a model of passively Q-switched Raman lasers by utilizing the rate equations. The intracavity fundamental photon density, Raman photon density and th
清晨,我无比兴奋,因为我就要回到阔别二十年的家乡了.我和发小儿志强约定在村口相见.rn现在的我,是一名留学在外十几年的博士.智能管家小辉提醒我:“主人,您家乡变化太大,与
几何无王者之道(There is no royal road to geometry)!rn——欧几里得rn据传,欧几里得曾给托勒密王讲授几何学.这位国王问欧几里得:“除了《几何原本》之外,还有没有其他学
着丝粒作为真核生物染色体上必备的功能元件,参与动粒的组建、染色体的分离、姊妹染色单体的粘合、同源染色体的配对等重要生物学过程。着丝粒序列主要是由反转座子以及卫星重复组成,但在不同的物种间甚至是在近缘物种间呈现高度变异,因此,难以克隆分析。本研究通过基于着丝粒上具有的特异组蛋白CENH3(centromeric histone H3;亦称CENP-A)的染色质免疫沉淀和高通量测序分析(ChIP-se
The overtone spectra of H2SiCl2 molecule in the regions of 2000-9000cm-1 and 12000-129000cm-1 at room temperatures have been studied by use of high-resolution F
曾经,泪,是离我很远的一个字.每天,我和同学们一样,快乐地上学,快乐地玩耍,快乐地写作业……rn然而,从 2020 年 6 月 26 日早上开始,泪就与我形影不离了.