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Polarimetric Synthetic Aperture Radar measures the frequency, magnitude, absolute and relative phase of targets' backscattering signals in imaging scene for any possible combination of transmit and receive antennas. The polarization synthesis technique on one hand has greatly increased the acquired polarization information, on the other hand increased the difficulty of system design and signal processing.

中文摘要极化合成孔径雷达的回波信号可以提供不同收发极化状态组合下成像场景内目标散射波的幅度、绝对和相对相位、频率等信息，极化合成技术的出现使获取的信息量成倍增加，信息量增加的同时系统设计和信号处理的复杂度增加，因此极化合成孔径雷达相关技术的研究成为微波遥感领域的热点。

In view of the the difficulty of mixture gas's characteristic absorption spectrum line overlapped, a novel seriatim mixture gas recognition method based on Support Vector Machine two classes classification and recognition model was presented.

针对混合气体种类光谱识别中组分气体特征谱线重叠严重的问题，将支持向量机用于混合气体种类光谱识别中，提出了一种基于支持向量机二值分类识别模型的逐一混合气体种类识别方法。

Xu Yi said that the United Nations on the prevention of sexually transmitted diseases, made the "ABC" principle. A representative of Abstinency, which means "abstinence", to a total ban may be some difficulty, then step back and to "exercise restraint", in particular young people, we must avoid premature sex. B is Be faithful, which means "loyalty" and replaced by a modern language is to be monogamous or have a fixed partner, not a stranger to have sexual relations. C is the Condom, that is, condoms, this is the last step.

徐克沂表示，联合国对预防性病，提出了"ABC"的原则。A代表Abstinency，意为"禁欲"，要完全禁止可能有些难，那就退一步，做到"节制"，尤其是青少年，一定要避免过早发生性行为。B是Be faithful，意思是"忠诚"，换成现代语言就是要做到一夫一妻制或是有固定的性伴侣，不要和陌生人发生性关系。C就是Condom，即安全套，这是最后一步。

Several combining with middle school mathematics teaching Abstract: combining the number is the number of more abstract corresponding relation and the geometrical graph, combine to solve the problem of abstract concepts to materialize and intuitive, intuitive, abstraction, and systematic problem to reduce the difficulty of the problem, and to help students thinking transformation and training students' ability.

数形结合与中学数学教学摘要：数形结合就是把较为抽象的数量关系和与其对应的几何图形相互结合起来解决问题，使抽象的概念直观化、具体化，使直观的问题系统化、抽象化，从而达到降低难题的难度、帮助学生思维转换、培养学生能力的作用。

However, because of the complexity and the abstractness of the L/C, it has aggravated the difficulty of risk guard and finanicial supervision.

但是，由于信用证业务自身的复杂性和游离于基础合同的独立抽象性加重了风险防范和金融监管的难度。

He replied:"I find no difficulty in accepting this."

他回答："我认为这一点是无庸置疑的。"

Such as: mental block, disorder of gastrointestinal tract, hypertension, coronary heart disease, cancer, sexual function decline, accidie, difficulty concentrating, fidgety, insomnia, disorder of digestion function, inappetency, abdominal distension, dismayed, chest distress, constipation, laxness, feel exhausted, even feel dead.

包括：心理障碍、胃肠道疾病、高血压、冠心病、癌症、性能力下降、倦怠、注意力不集中、心情烦躁、失眠、消化功能不好、食欲不振、腹胀、心慌、胸闷、便秘、腹泻、感觉很疲惫，甚至有欲死的感觉。

It is right hold " again obtain employment accommodation paper ", be apart from legal and emeritus age to be not worth 5 years, enjoy townsman lowest life safeguard, again obtain employment one, Sichuan of close together union is actual, carry out the State Council seriously 36 files have difficulty truly and the big especially tired staff that joined social insurance offers a society...

四是对持《再就业优惠证》、距法定退休年龄不足5年、享受城市居民最低生活保障、再就业一、紧密结合四川实际，认真贯彻国务院36号文件确有困难且参加了社会保险的大龄特困人员提供社会。。。

At first, Professor Chou hoped we could introduce "Ice Shavings", because it's a local and common snack in Taiwan and it could attract the masses. However, the topic of the" Food Culture" was deleted on account of the difficulty in division of labor. It takes about forty teachers and students two months to finish the project; it's far from easy!

主题是由指导教授-周教授决定，本来教授希望能介绍「剉冰」，因为那是台湾一样相当有特色且普遍的冰品小吃，很能吸引大众的兴趣，但由於分工不易，所以改成「饮食文化」，由四所学校，三、四十位师生於两个月内完成，相当不容易！

In the five years, I want to make an accountant, but do not represent an accountant, I gave up what I read English, English I will still try to read to write, I want to make an accountant might some difficulty, because I haven't got up to still study accountant evidence, but after I graduate, and heart to still study accountant evidence of accounting work, I now is in the first year of the financial, therefore, I will go to the training examination, I find an accountant, then the third, four, five years later will work harder upwards, but also a layer of development, I will study English hard

我在这5年里想去做一名会计，但做一名会计并不代表我放弃了我现在所读的英语专业，英语我还是会努力的去读去写，我想做一名会计可能有些困难，因为我现在还没有考到会计证，但是毕业后我会去学心会计，然后考会计证，我现在的工作是财务，所以在第一年的时候，我会去培训考试，第二年我会找一份会计，然后第三，四，五年以后会更加努力的向上一层发展，但是同时我也会努力学习英语的

Many will continue to choose to live in duality and in conflict.

许多人将继续选择活在二元对立性和冲突中。

I find that students of the University of Physical Education all wear sportswear at first sight.

我发现：体育大学的学生乍一看，都是穿运动衣，大家都一样