1839年

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1.
But rubber only began to be used widely after 1839, when Charles Goodyear found a way to make it strong, durable and elastic.
不过，直到1839年之后橡胶才得到广泛应用，当时查尔斯·固特异发现了一种让它变得更强、更灵活，更持久耐用的方法。
pk4.xyz
2.
This set of American state papers on China, spanning the century since 1839, is an agreeable exception to the general rule.
这一套关于中国从1839年开始横跨了世纪的美国国家报告，却是一般规律外的一个例外。
goabroad.zhishi.sohu.com
3.
This is all due to the legacy of 1839, which happened long before Pakistan was even created.
这些都是拜1839年的“遗产”所赐，比起巴基斯坦建国要早的多。
www.ltaaa.com
4.
The company traces its roots to a textile manufacturer founded in 1839.
公司的前身是一家成立于1839年的纺织厂。
www.joyen.net
5.
A year later 30 American ships cruised around Japan, and by1839 the number of Western whalers had grown to 550, four-fifths of themAmerican.
一年后就有30艘美国捕鲸船在那里出现。到1839年，捕鲸船的数量增加到了550艘，占全美总数的五分之四。
blog.ecocn.org
6.
Schwann cells (SCs), one of glia cells, forming peripheral nerve Myelin sheath, were the first described by Theodor Schwann in 1839.
雪旺细胞（Schwanncells，SCs）是形成周围神经髓鞘的胶质细胞，1839年德国科学家TheodorSchwann最先描述。
www.juhe8.com
7.
Founded in 1839 to gain the 100-lai, Switzerland is the only one completely independently operated by the family watch manufacturers.
创立于1839年的百达翡丽，是瑞士现存唯一一家完全由家族独立经营的钟表制造商。
zhidao.baidu.com
8.
The flags shown on this ship model are small replicas of the dragon flag that was taken from a junk during the opium war 1839 - 1842.
旗帜上显示的船模是小型复制品龙旗是取自在鸦片战争中的帆船1839年至1842年。
www.23model.com
9.
Although they have been around since 1839, fuel cells sound like the energy source of the future.
尽管燃料电池在1839年就出现了，可是听起来它还是像一种未来的能源。
www.showxiu.com
10.
I-Dosing is actually a variation on the phenomenon - "binaural beats" - found by German physicist Heinrich Wilhelm Dove in 1839.
据了解，“音频毒品”实际上是1839年德国心理学家海因里希-威廉发现的“双耳节拍”现象的变种。
www.hxen.com