查询词典 Q

Using TWINSPAN and CCA, we analyzed species composition and community structure of Quercus liaotungensis and Q. dentata - Q. acutissima mixed forests based on 43 plots from Mt.

在北京东灵山、喇叭沟门和大海陀山地区的辽东栎林以及白龙潭地区的槲树 Q。

In the high alumina cement , dicalcium aluminate silicate is transformed into Q phase.

将高铝水泥中的惰性成分硅铝酸二钙(C2AS)转化为水化活性良好的Q相，组成Q相铝酸一钙七铝酸十二钙(C12A7)高铝水泥系统，对此系统的烧成条件进行研究。

In this paper, the host-guest relationship between a general cucurbit [n=7] uril (Q[7]) or a new ellipsoid-host-symmetric tetramethyl-cucurbituril (TMeQ[6]) with hydrochloride salts of 4,4'-dipyridyl (44) or N,N'-dimethyl-4,4'-dipyridyl(dm44) was examined for confirming the interaction between cucurbituril (Q[6]) and these guests.

以七元瓜环(Q[7])和新型椭圆型改性瓜环―对称四甲基取代六元瓜环(TMeQ[6])为主体，4，4'-联吡啶的盐酸盐(44)以及N，N'-二甲基4，4'-联吡啶的盐酸盐(dm44)为客体的主客体相互作用进行了考察。

In chapter 4, by AREELS, the Generalized Oscillator Strength Density Spectra were measured in the energy region from 56 to 66eV, with the incident energy 2. 5 keV and energy resolution 80 meV, at scattering angles from 0°to 6°, corresponding to the momentum transfer K〓=0.03~2. 01 a. u. The Fano profile parameters f〓 and q for the optically allowed transition 〓(0, 1)〓P°and the optically forbidden transitions 〓(1, 0)〓S〓and 〓(1, 0)〓D〓 were obtained as a function of K〓. With the hyperspherical coordinate wavefunctions, the dynamical correlation are discussed qualitatively. So, a new experimental way to study dynamical electron correlation effect is opened.In chapter 5, the widely used R-matrix theory was introduced. Then, the GOSDS for the optically allowed excitation series (1s〓)〓S〓→〓(0, 1)〓P°(n=2-4) were calculated by this method, and the Fano profile parameters f〓 and q were obtained sequently. So the electron correlation effect can be described by these parameters quantitatively, and the theoretical results were compared with our AREELS experimental results.

在第四章中，实验上，同样使用角分辨的高能量分辨快电子能量损失谱仪，在2.5keV电子入射能量和80meV的能量分辨下，测量了0°到6°散射角下的He原子双电子激发态在56~66eV的广义振子强度密度谱，这种情况，0°~6°对应的动量转移范围K〓=0.03~2.01a.u。，得到了光学允许跃迁的双电子激发态〓（0，1）〓P〓和光学禁戒跃迁的双电子激发态〓（1，0）〓S〓、〓（1，0）〓D〓的Fano线形参数f〓，q等随动量转移变化的曲线；观测到了几个强度很弱、能级很窄的光学允许和禁戒跃迁双电子激发态，用前人准确的理论结果进行了标识；通过比较弱共振〓（1，0）〓S〓和〓（-1，0）〓S〓的强度随动量转移K〓的变化规律，结合超球坐标理论计算的波函数，定性地阐述了在电子碰撞散射过程中它们各自不同的动力学电子关联效应，发展了一套在实验上研究电子关联效应的新方法。

The second order parameters 〈P_2〉_λ and the values of introrse intensity Q in different shells of the droplets on 2DR boundary conditions at different reduced temperatures were calculated.

取沿向列相液晶微滴表面切向随机取向边界条件，计算了不同温度下二阶序参量〈P2〉λ和沿表面切向的内禀强度Q在液滴内不同区域的数值，发现在低温时，Q值从液滴外层到内层有逐渐减小的趋势，外层接近于1。

The higher the Q, the bass band will become peaker and theQ facor of 0.7 is flat and balance.

Q值越高，低频带的峰值越厉害，而0.7的Q值是较平和平衡的。

Halogenated aromatic compounds with great q〓(the most negative net atomic charges on an atom of the molecule), ENC (electron-nuclear attraction energy of the one-center term for the carbon atoms of the weakest carbon-halogen bond), qc (thenet atomic charges on the carbon atom of the weakest carbon-halogen bond) and E〓 tend to be reductively dehalogenated slow, while halogenated aromatic compounds with high values of △E (the difference of front-line orbital energy), EEC (electron-electron repulsion energy of the one-center term for the carbon atoms of the weakest carbon-halogen bond), Mw, q〓 and α tend to be reductively dehalogenated fast.

卤代芳烃化合物的整个分子的最负的原子净电荷，键序最小的碳卤键中碳原子的单中心项电子-核吸引能，该碳-卤键上碳原子的净电荷和E〓与该卤代芳烃化合物还原脱卤的速率常数负相关；而前线轨道间隙能，键序最小的碳卤键中碳原子的单中心项电子-电子推斥能，Mw，q〓和α与该卤代芳烃化合物还原脱卤的速率常数正相关。

Golikov as the general and single-valued criterion for evaluating the acoustics of rooms and auditori- ums have been critically examined,with detailed discussionsconcerning:(1) the empirical foundation of the articulation-Q"functional relationship A= f,(2)the derivation of the"particular criterion"or the optimum re- verberation condition form Q",(3)the meaning of a time integration of the "noise-interference factoras viewed from the theorey of auditory perce- ption...

主要内容有：(1)以在不同的条件(如语言、测试人员、宣读方式以及声学场所等)之下的清晰度测验结果来验证 A=f函数的适用性，(2)判断了从Q&来推求以体积为参数的最佳混响时间的可能性，(3)，从听觉理论来讨论&混响干扰因子&对时间积分的意义，(4)讨论了原作者对&噪声因子&的看法，指出了&噪声因子&定义中的一些值得存疑之处。

The experimental result showed that 1086 and 848 proteins were identified by MALDI-TOF-TOF and ESI-Q-TOF respectively,wherein 633 proteins were homolog;38 and 33 pro...

结果表明，用MALDI-TOF-TOF和ESI-Q-TOF方法分别鉴定出1086种和848种蛋白质，其中相同的蛋白质为633种；MALDI-TOF-TOF和ESI-Q-TOF方法分别找到38种和33种表达差异在0.5倍以上的蛋白质，其中3种为相同的蛋白质。

The proposed algorithm can deal with Carrier Frequency Offset and Sampling Frequency Offset estimation with the presence of frequency dependent In-phase and Quadrature-phased imbalance. Then frequency dependent I/Q imbalance and channel response are jointly estimated.

该联合估计算法能在存在频率相关性I/Q失配的情形下准确获得载波频率偏差和采样频率偏差的估计，并获得频率相关性I/Q失配和信道冲击响应的联合估计信息。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。