十五世纪

In the field of energy planning, we are always required to solve a kind of linear-inequalities problems with large-scale and sparse coefficient matrix.

自二十世纪五十年代的运筹学以及管理科学的兴起和发展以来，解决线性不等式组的方法层出不穷。

It is clear from Michael Charlton's "The Price of Victory"(1983) that British politicians and officials never had any intention of joining the nascent moves towards a European union in the 1950s. Mrs Thatcher spoke for many when, just over ten years after her 1988 speech in Bruges attacking a potential European superstate, she told a meeting of Scottish Tories that "in my lifetime all our problems have come from mainland Europe, and all the solutions have come from the English-speaking nations across the world."

根据迈克尔查尔顿的《胜利的代价》（1983年），显然，上世纪五十年代，英国的政治家和官员们从未打算加入到新兴的欧洲结盟运动中来。1988年，撒切尔夫人在布鲁日攻击过潜在的欧洲超级大国，而此事过去十多年后，她在一次会议上对苏格兰的托利党人讲了很多"我的有生之年中，我们所有的问题都来自欧洲大陆，而所有的解决方法都得自于全世界的英语国家"。

I do appreciate some things about the former five-division titleholder, who I consider, along with Mosley, to be among the best fighters I've had the privilege of covering in the late 1990s and this decade.

上世纪九十年代后期直到最近十年，我有幸报道了最棒的拳手们，而梅威瑟和莫斯利均位列其中。可以说，在某些方面，我的确欣赏前五个级别头衔获得者梅威瑟。

One interesting experiment at diversification by Jena occurred in the mid 1950's; Carl Zeiss Jena produced four variants of a model two-cycle diesel engine for hobbyist applications in model cars, planes, and boats!

二十世纪五十年代中期，耶拿东蔡发生了一件有趣的事：公司生产了一种作模型用的两冲程柴油机，供业余爱好者们制作车模、飞机模型和船模使用！

Essentially all phenomena in chemistry find explanations in the quantum atom, while chemistry and physics undergird molecular biology, which, since the discovery of DNA in the 1950s, dominates modern biology.

从本质上讲所有的化学现象都可以在量子原子中找到答案。而自二十世纪五十年代发现DNA以来一直占据现代生物学主导地位的分子生物学，在背后支撑它的是化学和物理学。

Ad Diogn., xi and was commonly adopted about the end of the second century St. Iren.,"Adv. haer.", I, iii; Tert.,"De praescr.", xxxiv; St. Clem. of Alex.,"Strom.", VII, iii; etc.

" ，第五章"； epist公元diogn ，十一），并普遍采用的关于结束在公元二世纪（圣iren ，"副haer "，一，三；叔，"德praescr "，第三十四圣克兰姆。

Many colonies in Africa bego independent nations in the 1950';s.

非洲许多殖民地在二十世纪五十年代成了独立国家。

And this was the fifties, the grayest, bleakest, most blinkered and culturally repressive period in the entire second half of the twentieth century, especially in small-town America.

再说，那可是五十年代啊。在整个二十世纪后半期，这是最阴郁，最黯淡，最盲目的时期，也是文化上最压抑的时期。美国小镇上的生活更是如此。

According to the 1951 edition of Pharmacology and Therapeutics, it was to be prescribed for narcolepsy , post- encephalitic parkinsonism , alcoholism ,...

二十世纪五十年代，美国政府颁布法令将甲基苯丙胺规定为处方药，根据1951年出版的Arthur Grollman所著的《病理与药理学》一书，它可用于治疗嗜睡，后脑炎，帕金森综合症，酒精中毒，以及肥胖症。

In the early 1950's,historians who studied preindustrial Europe

二十世纪五十年代早期，研究前工业化时代欧洲（此处我们可将其界定为约自1300年至18

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。