近年中国人开始比较公开谈论性问题,不少书刊介绍了外国性学研究的一些新进展,特别是关于女性性高潮及 G 点等等(所谓 G 点是指阴道中有一敏感点,刺激它,就易于引起性兴奋以至性高潮。由德国人Grafrnberg 1972年首先报告,并由许多人证实...近年中国人开始比较公开谈论性问题,不少书刊介绍了外国性学研究的一些新进展,特别是关于女性性高潮及 G 点等等(所谓 G 点是指阴道中有一敏感点,刺激它,就易于引起性兴奋以至性高潮。由德国人Grafrnberg 1972年首先报告,并由许多人证实,因此命名为 G 点)。其实这些事中国人早就知道了。《合阴阳》(1973年出土于长沙马王堆汉墓,成书于2000多年前)一书,开头就有"…入玄门,御交筋…交筋者,玄门中之交脉也,为得操盾之,使体皆乐养,悦怿以好。…以恣戏道"的叙述。展开更多
Stiffening-ribbed-hollow-pipe cast-in place reinforced concrete girderless floor is a new-style hollow girderless floor system. Model experimental researches of simply-supported floor and four-corners bearing floor ha...Stiffening-ribbed-hollow-pipe cast-in place reinforced concrete girderless floor is a new-style hollow girderless floor system. Model experimental researches of simply-supported floor and four-corners bearing floor have been done on this new kind of floor system in this paper. The experiment results show that the floor system has good mechanical property such as high bearing capacity, big rigidity and good tensility. A theoretical method is presented in this paper that the stiffening-ribbed-hollow-pipe girderless floor can be analyzed by being converted equivalently to orthotropic solid slab. It is indicated that the method is correct and reasonable according to the contrast between theoretical calculated results and experimental measured results. The theoretical results coincide with the measured results well.展开更多
文摘近年中国人开始比较公开谈论性问题,不少书刊介绍了外国性学研究的一些新进展,特别是关于女性性高潮及 G 点等等(所谓 G 点是指阴道中有一敏感点,刺激它,就易于引起性兴奋以至性高潮。由德国人Grafrnberg 1972年首先报告,并由许多人证实,因此命名为 G 点)。其实这些事中国人早就知道了。《合阴阳》(1973年出土于长沙马王堆汉墓,成书于2000多年前)一书,开头就有"…入玄门,御交筋…交筋者,玄门中之交脉也,为得操盾之,使体皆乐养,悦怿以好。…以恣戏道"的叙述。
文摘Stiffening-ribbed-hollow-pipe cast-in place reinforced concrete girderless floor is a new-style hollow girderless floor system. Model experimental researches of simply-supported floor and four-corners bearing floor have been done on this new kind of floor system in this paper. The experiment results show that the floor system has good mechanical property such as high bearing capacity, big rigidity and good tensility. A theoretical method is presented in this paper that the stiffening-ribbed-hollow-pipe girderless floor can be analyzed by being converted equivalently to orthotropic solid slab. It is indicated that the method is correct and reasonable according to the contrast between theoretical calculated results and experimental measured results. The theoretical results coincide with the measured results well.
