两极性

There are two elements at work when you are working upon polarity.

当你在工作极性时，有两个要素在运作：信心，与渴望。

The fern spore, the original cell of the gametophyte, carries out asymmetrical mitosis to produce a large cell and a small cell. The small cell geminates to a rhizoid by tip growth, and the large cell further divides and develops to become a prothallus.

蕨类植物孢子作为配子体的原始细胞，通过不对称的有丝分裂产生一大一小两个细胞，小细胞萌发出极性生长的假根，大细胞继续分裂发育为原叶体。

These two ultimate commitments – call them naturalism and Christian supernaturalism – are logically incompatible and seek to cancel each other.

这两种终极性信仰的坚持──在此，我们称之为自然论及基督徒的超自然论，在逻辑上是互不相融、彼此抵消的。

The analysis methods for the determination of micro or trace elements in high moisture jellyfish were developed. The fatty acid compositions in difderent parts of fresh jellyfish were determined by GC/MS method. Thirty-five fatty acids were identified, and most of them were found in R. esculentum jellyfish for the first time. Especially, two unusual very long chain polyunsaturated fatty acids that were never detected in the other jellyfish also were determined. Amino acids were abundant in R. esculentum jellyfish, especially containing sulfur amino acids, and could be supplied for human diet. The polysaccharide in umbrella part of jellyfish was composed of glucose, galactose and uronic acid, and its molecular weight was 40,000, but the polysaccharide of the oral arms part consisted of glucose, mannose and glycuronic acid, and its molecular weight was 43,000. Above-mentioned data were never reported. The ethanolic extract of oral arms part of jellyfish were extracted by different polar solvents (petroleum ether, acetic ether, n-butanol), and antibacterial activity was tested to these extracts by four species of terricolous pathogenic bacilli and three species of botanic pathogenic fungi. The result demonstrated that the petroleum ether extract had certain bactericidal activity for two species of pathogenic bacilli, and n-butanol extract had certain inhibited activity on apple rot pathogenic fungus.

建立了 高含水量的海蜇产品中微量、痕量元素成分测定的分析方法；采用 GC/MS 方法测定了新鲜海蜇不同部位的脂肪酸组成，共鉴定出 35 种脂肪酸，其中大多数脂肪酸是首次在海蜇中被检测到，尤其是两种不常见的 C24：5 超长链多不饱和脂肪酸的分析和鉴定在其它水母种属中也从未见报道；海蜇三个部位中氨基酸成分齐全，含量丰富，含硫氨基酸含量较高，可与其它食物蛋白质的氨基酸互补；其中海蜇皮多糖是由葡萄糖、半乳糖和糖醛酸组成，分子量为 40，000，海蜇头多糖是由葡萄糖、甘露糖和糖醛酸组成，分子量为 43，000，以上工作均未见报道；利用石油醚、乙酸乙酯、正丁醇三种不同极性溶剂分别萃取海蜇头乙醇浸提物，用纸碟法和生长速率法分别对四株陆源病原菌和三株植物病原真菌进行了抑菌实验，结果表明海蜇头石油醚提取物和正丁醇提取物具有一定的抑菌活性。

The analysis methods for the determination of microor trace elements in high moisture jellyfish were developed. The fatty acid compositions indifderent parts of fresh jellyfish were determined by GC/MS method. Thirty-five fatty acids wereidentified, and most of them were found in R. esculentum jellyfish for the first time. Especially,two unusual very long chain polyunsaturated fatty acids that were never detected in the otherjellyfish also were determined. Amino acids were abundant in R. esculentum jellyfish, especiallycontaining sulfur amino acids, and could be supplied for human diet. The polysaccharide inumbrella part of jellyfish was composed of glucose, galactose and uronic acid, and its molecularweight was 40,000, but the polysaccharide of the oral arms part consisted of glucose, mannose andglycuronic acid, and its molecular weight was 43,000. Above-mentioned data were never reported.The ethanolic extract of oral arms part of jellyfish were extracted by different polar solvents(petroleum ether, acetic ether, n-butanol), and antibacterial activity was tested to these extracts byfour species of terricolous pathogenic bacilli and three species of botanic pathogenic fungi. Theresult demonstrated that the petroleum ether extract had certain bactericidal activity for twospecies of pathogenic bacilli, and n-butanol extract had certain inhibited activity on apple rotpathogenic fungus.

建立了高含水量的海蜇产品中微量、痕量元素成分测定的分析方法；采用 GC/MS 方法测定了新鲜海蜇不同部位的脂肪酸组成，共鉴定出 35 种脂肪酸，其中大多数脂肪酸是首次在海蜇中被检测到，尤其是两种不常见的 C24：5 超长链多不饱和脂肪酸的分析和鉴定在其它水母种属中也从未见报道；海蜇三个部位中氨基酸成分齐全，含量丰富，含硫氨基酸含量较高，可与其它食物蛋白质的氨基酸互补；其中海蜇皮多糖是由葡萄糖、半乳糖和糖醛酸组成，分子量为 40，000，海蜇头多糖是由葡萄糖、甘露糖和糖醛酸组成，分子量为 43，000，以上工作均未见报道；利用石油醚、乙酸乙酯、正丁醇三种不同极性溶剂分别萃取海蜇头乙醇浸提物，用纸碟法和生长速率法分别对四株陆源病原菌和三株植物病原真菌进行了抑菌实验，结果表明海蜇头石油醚提取物和正丁醇提取物具有一定的抑菌活性。

They give an expression to different educational features in their respectively social background: Four Orientations attach much importance to regional impartiality of education, to the attributes of distance education and to the diversification of educational quality, all of which display distinct policy characteristics; Four Opens lay much emphasis on the equity among people, on the attributes of open education and on the standardization of educational quality, all of which are clearly typical of ultimateness.

两种理念具有深刻的内涵，其在中英远程开放教育中有着重要地位，两者在各自的社会背景中体现不同的办学特色："四个面向"理念更加重视教育"区域公平"，强调"远程教育"属性，注重教育质量"多样化"，具有更明显的政策性特征；"四个开放"则更重视教育"人际公平"，强调"开放教育"属性，注重教育质量"标准化"，具有更明显的终极性特征。

If the voltage polarities are in opposition, the voltmeter reading will be

如果这两个电压的极性相反，那么电压表的读数就为

Intraoperative injection of anhydrous alcohol in inoperable pancreatic cancer;2. The long term results of injection anhydrous alcohol to treat bromidrosis and its standard protocol;3. Accordingly, it becomes the best choice in the production of anhydrous alcohol .

分子筛的晶体结构不同于硅胶、活性炭等，具有高吸附性，对H2O ，NH3，H2S，CO2 等高极性分子具有很高的亲和力，在相对湿度小于30 %时，分子筛的吸水量比硅胶和氧化铝都高得多，用其生产无水酒精是最佳方案，工艺流程分为：(1)两塔蒸馏加分子筛；(2)分子筛处理后在蒸馏塔回收；(3)分子筛处理后送专用塔浓缩。

The modified QCM sensors were used to recognize the butylamine isomers in gas. The results showed that the QCM coated with both compounds had preferential affinity to n -butylamine, then i -butylamine, t -butylamine in the range of low concentrations, indicating that in the recognition process, the steric hindrance effect played an important role when forming complex with guest molecules.

修饰的QCM传感器用于识别气相中不同的丁胺异构体，结果发现，在小浓度范围之内上述两种化合物修饰的QCM均优先吸附正丁胺，之后依次为异丁胺和叔丁胺，表明在形成主客体化合物的识别过程中，空间位阻效应是一个重要因素；当分析物浓度增大时，丁胺的极性和磁性成为分子识别的主要因素。

Dialkylamine, which is an e-donor, was introduced at the C(4') or C(7) positions in 3HF resulting in similar ESICT/ESIPT dual emission. Even the net dipole moment, the orientation of which is affected by the CT effect, is expected different. Dialkylamine attached at both C(4') and C(7) positions in 3HF, of which the net dipole moment may be associated with the interplay between two charge-transfer systems, displayed different photo behaviors.

在3-hydroxyflavone的4'及7号位置分别修饰担任电子与体的二烷基胺类，在光谱上会观察到两种不同萤光波长，分别属於ESICT和ESIPT，但若同时修饰二烷基胺类，在不同极性溶剂下，会只有一个 ESIPT 的萤光。

Since historical times,England ,where the early inhabitants were Celts, has been conquered three times .

从有历史以来，英国，在此地早期居住的是凯尔特人，已经被征服了三次。

Bluetooth OBEX File Transfer Enables the sending and receiving of files on your phone via Bluetooth.

蓝牙OBEX文件移动允许经过蓝牙传送和接受文件。。。。