查询词典 for the first time

Based on a series of analysis for the relevant data during the period of 1950~1989, the relationship between the ozone layer variation/solar activity and the periodically prevalent features of two kinds of human infectious diseases in China, the epidemic cerebrospinal meningitis and human plagueepisodes, is presented and analyzed for the first time in this paper.

通过对1950~1989年间一系列有关资料进行分析，首次研究和报道了臭氧层变化、太阳活动与流行性脑脊髓膜炎及鼠疫传染病性病率流行周期特徵之间的关系。

Based on a series of analysis for the relevant data during the period of 1950~1989, the relationship between the ozone layer variation/ solar activity and the periodically prevalent features of two kinds of human infectious diseases in China, the epidemic cerebrospinal meningitis and human plagueepisodes, is presented and analyzed for the first time in this paper.

通过对1950~1989年间一系列有关资料进行分析，首次研究和报道了臭氧层变化、太阳活动与流行性脑脊髓膜炎及鼠疫传染病发病率流行周期特征之间的关系。结果表明，从较长时段看，臭氧层变化、太阳活动与ECM、HP年发病率间存在着较为密切的相关关系；从较短时段看，发病率的季节变化与某些气象因子的变化有一定的关系。此外，本文还提出了一个解释这两类疾病周期流行机制的简单模型

2001 through Marriage Law of the People's Republic of China the bill for amendment, increases the divorce mistake damage compensate system to take its 46th, in the legislation establishes the divorce mistake damage compensate system for the first time, has filled the divorce system's legislative blank, regarding the maintenance conjugal family relations, protects citizen's in conjugal family legitimate rights and interests, as well as to our country Marriage law the consummation has the great significance.

2001通过的《中华人民共和国婚姻法》修正案，增加离婚过错损害赔偿制度作为其第四十六条，立法上首次确立离婚过错损害赔偿制度，填补了离婚制度的立法空白，对于维护婚姻家庭关系，保护公民在婚姻家庭中的合法权益，以及对我国《婚姻法》的完善具有重大意义。

Old One Hundred Names was unaware of, and indifferent to, the fate of intellectuals during the Great Leap Forward and the Hundred Flowers epochs of the late 1950s, but seems on balance that for the first time in Chinese history , something was being done for his children's education and welfare, as it was being done contemporaneously in Russia , in the 1960s in Cuba , and continues to be done today in Venezuela .

在20世纪50年代的"大跃进"和"百花齐发"运动时期，作为底层民众的中国"老百姓"既没注意到也不在乎中国知识分子的命运，他们似乎在中国有史以来头一次通过政府给他们的社会地位找回了些许心理平衡，因为在此前的中国历史上，社会最底层民众家庭的孩子是享受不到教育或社会福利什么的，虽然这一幕幕同时也在当时的俄罗斯，20世纪60年代的古巴甚至在今天的委内瑞拉上演。

In 3D scalar Helmholtz equation computation, for the first time, this dissertation proves that there is an analytical solution of infinite series convegence for the problems satisfying the MT expansion condition, derives the MT general solution formula and the using laws, proves or explains the using rules that are used in the GMT and but they can't be proven or explained by The GMT.

首次从理论上证明，在三维静电场分析中，存在一种无穷级数收敛，且有一定普遍性的解析解；推导出三维静电场分析的多极理论通解及其使用规则，证明或解释广义多极技术不能证明或解释的若干使用规则，用多极理论求解工程实际中的三维静电场边值问题。

In 2D eddy current field computation, for the first time, this dissertation proves that there is an analytical solution of infinite series convegence for the problems satisfying the MT expansion condition, derives the MT general solution formula and the using laws, proves or explains the using rules that are used in the GMT and but they can't be proven or explained by the GMT, and solves several real engineering examples of 2D eddy current field boundary-value problems by the MT.

本文从电磁理论和有关数学定理出发，通过引入内极、外极、内交角的概念，建立一种新的电磁场计算体系——电磁场分析中的多极理论；从理论上证明，在电磁场分析中存在一种无穷级数收敛，且有一定普遍性的解析解。

The integrability conditions and coefficient conditions for the appearance of 5 and 6 limit cycles from the neighborhood of the equator are obtained. An example of cubic system with 6 limit cycles bifurcating from the equator is given for the first time.

同时计算出系统的前6个赤道环量，得到了系统在赤道邻域的可积性条件及在赤道附近分支出5个和6个极限环的系数条件，从而首次给出了一个平面三次系统在赤道附近分支出6个极限环的计算实例。

Further more, we get the necessary and sufficient conditions for the two-dimensional discrete system, where the permanence and extinction of the system are decided and only decided by the relationship of the non-delay coefficients in the system. Further, we for the first time find the equivalent permanence and extinction between the two-dimensional discrete Lotka-Volterra and its corresponding continuous system.

进一步，本得到了此类离散系统二维自治情形下，其持续生存和灭绝分别等价于系统非时滞系数构成的相应不等式；通过比较本文中二维自治Lotka-Volterra竞争系统的连续和离散两种情形的有关结论，首次发现这两类系统具有等价的持续生存和灭绝性质，建立了这两类系统之间的联系。

The C, H chemical shifts of the compound were assigned and the coupling constant, J values, were also given out. The three downfield proton and carbon signals in the 1H NMR and 13C NMR spectra for target compounds have been assigned for the first time.

对代表性目标化合物TM-I-5c的NMR谱进行了详细的研究，对其C、H化学位移进行了全归属，给出了相应的偶合常数J值，并确定了其空间结构。

In the second part, we have considered the polariton system described by the model effective Hamiltonian involving single mode photon field interacting with a transverse optical phonon in a more realistic form. On this basis, we have discussed the dynamical evolution of the wave function , the dynamical variables and the non-classical properties for the system in a analytic form for the first time.

第二部分将极化激元系统约化成模型单模光子—横向声子有效相互作用系统，在此基础上以解析形式首次讨论了系统的波函数、力学量和压缩态、亚泊松分布等非经典效应的动力学演化行为。

In the negative and interrogative forms, of course, this is identical to the non-emphatic forms.

。但是，在否定句或疑问句里，这种带有"do"的方法表达的效果却没有什么强调的意思。

Go down on one's knees;kneel down

屈膝跪下。。。下跪祈祷