The product was recrystallized by non-polar or low-polar solvent.
并用非极性溶剂或弱极性溶剂进行重结晶。
Another is that the number of humans who venture into polar bear territory remains somewhat low.
另一个理由则是，冒险进入北极熊领地的人还是少之又少的。
It shows that BTS polar glass ceramics with grain orientation structure have a potential application in SAW devices for their high SAW coupling coefficient and low temperature coefficient of delay.
这种具有晶粒定向结构的BT S极性微晶玻璃，具有较高的机电耦合系数和低的延迟温度系数，在声表面波器件上具有潜在的应用价值。
One thing alone makes it almost impossible for men to live in Antarctica and in parts of the arctic. This one thing is the low temperature — the killing chill of far North and the polar South.
一件事情足以使得人类几乎无法生存于南极和北极的地区，那它们的低气温——遥远两极要人命的寒冷天气。
ASE can extract the substances such as acids. terpenes, aldehyde ketones and the big polar alcohols with low boiling point as well as the high boiling point.
ASE除了萃取低沸点的萜类外，还有高沸点酸类、萜类、醛酮类和大极性醇类。
Because the fiber is of chemical inertion, low surface energy, lack of polar groups, and highly symmetric methylene structure, the fiber has a high degree of crystallinity and orientation.
这是由于纤维在化学上不活泼，表面能低，表面缺乏极性基团，且是高度对称的亚甲基结构，使得纤维具有很高的结晶度和取向度。
If the silane has no polar group, the surface free energy is low.
反之若硅烷中不含有极性基，则处理后玻纤的表面能较低。
The 12 of low polar components of Anabasis Aphylla L. were separated and identified by gas chromatography-mass spectrometry. They are naphthalene and azulene species.
采用气相色谱-质谱测定无叶假木贼低极性化学成分，分离鉴定了12个化合物，它们是萘类与类化合物。
The immediate cause of low temperature in the polar regions is the low solar elevation and solar radiation input.
在极区，太阳粒子辐射的加热，可超过紫外辐射的作用。
The data of polar motion, rotation of the earth and atmospheric excitation function are analysed by the Auto-Regression power spectrum method, and their spectra at low frequency band are obtained.
本文用自回归功率谱方法分析了极移、地球自转和大气激发函数的资料，得到了它们的低频谱。
Polar-orbiting satellites are low-flying satellites circling the earth in a nearly north-south orbit, at several hundred kilometers above the earth.
极地轨道气象卫星以大致南北方向环绕地球运行。它的轨迹离地面约数百公里。
Concerning the problem to instability and low accuracy of the passive filter on bearings-only target tracking, a modified adaptive Extended Kalman filter algorithm on polar coordinate is presented.
在水下被动目标跟踪系统中，直角坐标系下的扩展卡尔曼滤波器容易发散而导致滤波精度很差。
one thing alone makes it almost impossible for men to live in antarctica and in parts of the arctic. this one thing is the low temperature --- the killing chill of far north and the polar south.
只有一件事情足以使得人类几乎无法生存于南极和北极的一些地区，那就是它们的低气温——遥远两极要人命的严寒天气。
And oil degradation in polar area is very slow for perennially low temperature there.
由于这些地区常年处于低温状态，石油烃的自然降解非常缓慢。
This magnetic storm has different physical processes at the middle low latitudes and the southern polar cusp region.
分析表明，南极极隙区与中低纬区磁暴形态差异很大。
Young male polar bears SPAR under the low light of winter in Svalbard, a cluster of islands halfway between Norway and the North Pole.
在挪威和北极之间的半途上有的一群岛屿，称为斯瓦尔·巴特群岛。在冬季微弱阳光的照耀下，岛上的雄性北极熊仔在对打。
The Iridium network uses 66 low earth orbit satellites in polar orbits 485 miles above sea level.
铱网络使用66低轨卫星在极地轨道485公里以上的海平面。
Check resistibility of product to extremely high and low temperature encountering as taking in and out at the polar regions.
试样在高温低温下反覆转换、及在短时间中反覆的接受热冲击、可用来判断产品在极端区域的抵抗力。
De Xiang carbon crystal far infrared feet warmer is a low temperature radiant heating product and is mainly made up of carbon crystal electric blankets and non-polar switches.
“得象”碳晶暖足宝是由碳晶电热毯和无极调温开关为主要部件组成的低温辐射供暖产品。
De Xiang carbon crystal far infrared feet warmer is a low temperature radiant heating product and is mainly made up of carbon crystal electric blankets and non-polar switches.
“得象”碳晶暖足宝是由碳晶电热毯和无极调温开关为主要部件组成的低温辐射供暖产品。
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