查询词典 polar front

The patient showed atrophy in frontal and temporal lobe on regular MRI, significantly reduced amount of Nacetyl aspartic acid、cholineand creatinecompared with contralateral on MRS , remarkably decreased blood flow in the left temporal polar and front part of fontal lobe compared with contralateral on PWI. There were decreased association fibers between Broca and other regions meanwhile no association fibers were found between triangular area and wernicke region on DTI. The fibers projecting to opercular part of frontal lobe via archiform fibers were lessened. The mean FA and fibers of Broca and Wernick regions were less than that of the healthy subjects.

常规MRI显示左侧额叶及颞叶萎缩；磁共振波谱分析显示左侧颞叶和额叶N乙酰天门冬氨酸、胆碱、肌酸含量较对侧明显减低；磁共振灌注成像显示左侧颞极及额前部的血流量较对侧减低；弥散张量成像显示左Broca区与其他脑区间纤维联系减少，三角区与Wernicke区无纤维联络，左侧Wernicke区通过弓状纤维到达额叶岛盖部的纤维减少，Broca及Wernicke区平均FA及纤维束较正常人减少。

With their large, slightly webbed front paws, polar bears are powerful swimmers.

拥有硕大，细长的蹼的前掌的北极熊是游泳高手。

Polar bear Corinna stands in front of her baby Wilbaer during his first outing on April 16, 2008 at the Wilhelma zoo in Stuttgart, southern Germany.

德国南部斯图加特威尔玛动物园的北极熊贝比威熊，16日在熊妈妈可琳娜身后开心玩耍。

The results show that the formation mechanisms of the event are as follows.(1) The strong warm advection of 500hPa over the west Europe led to a blocking high created in Siberia area, and a zonal though, the north-east stream in the north edge of the though led to super polar cold air and the cold air from west together and got to strengthen, and then the abnormally strong cold high, front zone, cold temperature center and cold temperature advection appear.

结果表明：这次寒潮及寒潮天气主要成因是(1)西欧上空500hPa强暖平流致使在西伯利亚地区形成阻塞高压，建立横槽，横槽北侧的东北气流引导超极地冷空气和西路冷空气合并加强；形成了异常强的冷高压、锋区、冷温度中心和冷温度平流。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。