Two ways to get the same polar equation.
两种办法都能得到相同的极坐标方程。
They may be polar opposites, but something is attracting two species of minke whales, producing at least one hybrid offspring, a new study says.
一项新的研究显示，两种分别生活正在南北极的小须鲸不知为何相会并生出一种混血鲸，而且可能不止生出了一头。
These two types of stories seem polar opposites, but what holds them together and defines them is the strong central character that creates the reason for the story to be told.
这两个类型看起来好像完全不相干，但将它们统一在一起的，就是故事中强烈的人物性格特征，如果没有这一特征，此类故事将不复存在。
Pictured here: Two polar bears spar, or play fight, in Churchill, Manitoba.
图为两只北极熊在争吵或打闹，摄于马尼托巴丘吉尔。
Two polar bears play in front of Kaktovik's old defence early warning site used during the cold war.
两个北极熊在卡克托维克一所冷战时期使用的预警防御建筑前玩耍。
Two polar bear cubs play with rubbish along the Barter Island shore.
两个北极熊幼仔在巴特岛海岸玩垃圾。
Two polar bears SPAR in the snow as a magenta sunset descends over Churchill, Manitoba, Canada.
品红色的暮光降临到加拿大曼尼·托巴省的丘吉尔小镇，两只北极熊正在雪中打闹。
Even though these two attitudes are polar opposites, they both started with the same challenge.
尽管这两种态度完全对立，但是它们都是由相同的挑战所引发的。
Despite several mishaps—including a polar bear attack that ended with one crewman bitten and two dogs dead—the first two years of the journey were oddly easy.
除了发生过几件不幸的事情（包括一次导致一人被咬伤两只狗被咬死的北极熊袭击事件），头两年的航程出奇地顺利。
Churchill, Manitoba, Canada, is home sweet home to this polar bear and her two cubs.
加拿大的马尼托巴湖丘吉尔河是这只北极熊和它的熊宝宝的甜蜜家园。
A 2007 study by the U.S. Geological Survey found that two-thirds of the polar bears on the planet could disappear by mid-century if Arctic ice keeps melting.
美国地质调查局2007年进行的一项研究发现：如果北极地区的冰层持续融化，那么地球上三分之二的北极熊在本世纪中叶前就可能消失。
A stranded female polar bear and mother of two cubs waits for the sea ice to return to be able to hunt.
滞留的雌性北极熊-两个小熊的母亲正在等待可以返回的海冰。
The point is that the two types of chemicals are polar opposites.
也就是说，酸和碱是两种完全相反的化学物质。
Racing back to his base, Framheim (named after his ship, the famous polar-going Fram, meaning "forward"), Amundsen abandoned two companions, who struggled into camp a day after his return.
返回到“弗雷门海姆”营地，阿蒙森抛弃了两个同伴，因为他们在阿蒙森到达基地一天后才跌跌撞撞的返回到营地。
The conservation goal of the Fish and Wildlife Service over the next five years is to prevent further decline of Alaska's two polar bear populations, the southern in Beaufort and in the chukchi.
在南波弗特和楚科奇，鱼类和野生动物组织在未来五年的目标是防止阿拉斯加的北极熊两个种群进一步减少。
Standing nearly nine feet tall, two male polar bears engage in play combat on the February 2004 cover.
2004年2月的封面，两只直立约9英尺高的雄性北极熊嬉戏打闹。
Two levels of glaciers melting, polar animals lose their chance of survival at the same time, will lead to rising sea levels, many coastal cities into the water did not result in a few years later.
两个层次的冰河融化，极地动物失去生存的机会的同时，将导致海平面上升，许多沿海城市入水并没有导致几年后。
Method By the device of VSOS, the sample was injected into two difference polar capillary columns, and entered into two selected detectors after separated.
方法样品进样后通过VSOS装置进入两根不同极性的毛细管柱，经分离后到达两个不同选择性的检测器。
Two, the amount of small, polar added that can achieve a very high effect.
用量小，极地的添加量即能达到很高的效果。
His work examining sediment cores from Antarctica's sea floor indicated if the planet were two to three degrees warmer, it would have a dramatic effect on the polar ice sheet.
他从对南极洲海底沉积物的探究工作中得出，如果地球再暖上2到3度，这将会对极地冰盖产生巨大影响。
We could do it dy dx. Or, maybe we will want to actually make a change of variables to first shift this to the origin, x-2 you know, change x to x minus two and then switch to polar coordinates.
也可以dy，dx来划分，或者,对变量做一下变化，移动到原点，就是把x变成,然后再转化成极坐标。
Vietnam, Thailand and Indonesia experienced significant Earthquake activity, tsunamis and tidal bores. But the end of these two countries was the polar melt.
越南，泰国和印尼经历了巨大的地震活动，海以及海潮冲击。泰国和印尼被两极融化淹没了。
A female polar bear and her two-year-old cub wait for the sea ice to return.
母熊和她2岁的幼熊正在等待回家的海冰。
The two hydrogen atoms form a polar molecule, that is, one with a slightly positive end and one with a slightly negative end.
两个氢原子构成了一个极性氢分子，一个略带正极，一个略带负极。
The UK has been a leader in polar science and exploration for more than two centuries, and is playing a major role in IPY.
英国从事极地研究与探测项目已经有两个多世纪的历史了，是这一方面的领头军，并在国际极地年的科考活动中扮演着重要角色。
Polar nuclei The, usually two, haploid nuclei found midway along the EMBRYOSAC, forming a binucleate central cell. They may fuse to form the diploid definitive nucleus.
通常指两个位于胚囊中间的单倍体核，他们可能融合形成一个二核的中央细胞。
There are two kinds of coordinates, Cartesian coordinates and polar coordinates, with which spatial issues are analyzed and calculated.
分析和计算的空间问题，一般可采用两类坐标系：笛卡儿直角坐标系和极坐标系。
There are two kinds of coordinates, Cartesian coordinates and polar coordinates, with which spatial issues are analyzed and calculated.
分析和计算的空间问题，一般可采用两类坐标系：笛卡儿直角坐标系和极坐标系。
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