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Based on the relation between modal amplitude and phase in the mode conversion of the few mode fiber, a novel configuration of an asymmetric biconical fiber and a fiber mode converter is presented to realize the nonreciprocal propagation in optical fibers. Preliminary feasibility is demonstrated both theoretically and experimentally.

基于少模光纤中模式转换的振幅和相位关系，提出采用不对称双锥光纤与光纤模式转换器的组合结构实现光纤中非互易传输的技术构思，从理论和实验上进行了初步的可行性论证。

In the paper, the stability of the static states of the system was discussed theoretically and the control parameter was determined nearby the point of Neimark-Sacker bifurcation.

首先利用理论分析了一个二维离散超混沌系统的不动点的稳定性，以此得到系统发生Neimark-Sacker分岔时参数α的近似值。

The two-parameter unfoldings of local dynamical behavior,near the point of Hopf-Hopf bifurcation, is investigated theoretically.

理论分析了四维范式映射在Hopf-Hopf余维二分岔点附近的参数开折。

The formative process and developing mechanisms of environmental biogeochemistry as a burgeoning interdisciplinary science were theoretically discussed.

本文从理论上探讨了环境生物地球化学这一新兴交叉学科的形成过程和发展机制，尝试性地提出了该学科的定义和科学使命。

The supermolecule system building on the weak interactions between molecules has always been the focus on chemistry , bionomy , material science and informatics theoretically and experimentally . However , because the experiments fail to provide varied information in detail .

通过分子间弱相互作用构筑的超分子体系一直是化学，生命科学，材料科学，信息科学领域在理论和实验上的研究焦点，但对于分子间的相互作用体系，实验研究不能提供十分详细的各种信息，所以量子化学计算在补充其结构，能量，光谱等信息上有着重要的意义。

In this paper, we study theoretically infinitesimal element method for calculation of stress birefringence in polarization maintaining fibers.

本文研究了计算保偏光纤中应力双折射特性的微元算法，对其计算值进行了理论验证。

In this paper, we theoretically and experimentally discussed a new bleaching technique using environmental friendly peracetic acid as initial bleacher for flax textile by two-step Total Chlorine Free method.

本文从理论上和实验上详细研究了利用环保型漂白剂过氧乙酸作为两步漂白法中的初漂剂对亚麻织物漂白的新工艺。

It is proved theoretically thatthe simple-form Bloch oscillations in superlattices can not emit microwave power.

从理论上证明了，超晶格导带电子单纯的Bloch振荡不会发射微波，认为K。

Aiming at the fatal equipment hidden-trouble that the interference link on universal coupling joint in the 650 blooming mill is loose for the production process in the Rod Rolling Mill of Xianggang, the systemic analyses theoretically and practically were made in this article.

针对湘钢棒材厂生产过程中出现的650轧机万向联轴节过盈联接松动重大设备隐患，从理论及实践角度进行了系统的分析，找出了过盈联接松动的原因，提出了具体、有效和经济的最佳解决方案。

The article analyses the problem theoretically and practically that the management break the rule and the board of supervisors cannot effectively supervise it. And the article try to perfect the board ofsupervisors so as to make our corporate governance reasonable by changing personnel structure and nomination, reinforcing the supervision of business execution and finance, stimulating and binding system .

于是对当前公司管理层违规现象屡禁不止，监事会监督不力、形同虚设的问题作了理论与实践上的分析，并试图从内部环境和外部环境的改善来强化监事制度；从监事会人员的构成、任免，监事的业务执行监督权、财务检查权，监事的激励、约束等制度上来完善监事制度，以使我国的公司治理结构更加合理。

With Death guitarist Schuldiner adopting vocal duties, the band made a major impact on the scene.

随着死亡的吉他手Schuldiner接受主唱的职务，乐队在现实中树立了重要的影响。

But he could still end up breakfasting on Swiss-government issue muesli because all six are accused of nicking around 45 million pounds they should have paid to FIFA.

不过他最后仍有可能沦为瑞士政府&议事餐桌&上的一道早餐，因为这所有六个人都被指控把本应支付给国际足联的大约4500万英镑骗了个精光。