查询词典 V. F.

Let G be a double-outer plane graph, V, E, F be the set of points, edge and face, a plane graph G is k-total colorable, if the elements of V E can be colored with K-colors, any two distinct adjacent or incident elements receive different colors.

设G是一个双外平面图，V，E，F分别为双外平面图G的点集，边集和面集。G的全色数X是使得V∪E中的任意两个相邻或相关联的元素间均染不同颜色的最少颜色数。

For a heterogeneous elastic solid consisting of two homogeneous layers, three homogeneous layers whose shear wave velocities increasing with depth, or three homogeneous layers whose interlayer has high velocity, if there are multi-mode dispersion curves, the phase velocity V〓 of the first mode will close up to the Rayleigh wave velocity of the bottom layer when frequency f→OHz, and V〓 of the first mode will close up to the Rayleigh wave velocity of the top layer when f→∞.

由多导波模式的相速度频散曲线还可知，对于二层固体介质、结构层的横波速度随深度而递增的三层固体介质、含硬夹层的三层固体介质而言，若频率f→OHz，其基阶模式的瑞利波相速度V〓→V〓（V〓为最底层介质的瑞利波速度）；若f→∞，其基阶模式的V〓→V〓（V〓为最上层介质的瑞利波速度）；因此，随着频率f逐渐升高，野外实测的瑞利波相速度V〓曲线应该主要为基阶导波模式。

Therefore the dispersion curves obtained in the field are primarily consisted of the first mode. For a heterogeneous elastic solid consisting of three homogeneous layers whose interlayer has low velocity, the phase velocity V〓 of the first mode will also close up to the Rayleigh wave velocity of the bottom layer when frequency f→OHz, but V〓 of the first mode will close up to the shear wave velocity of the interlayer when f→∞, and there is a cut-off frequency at high frequency region for the first mode and V〓 close up to the compressional velocity of interlayer when interlayer is liquid.

当三层固体介质中存在软夹层时，若f→OHz，则其基阶模式的相速度V〓→V〓（V〓为最底层介质的瑞利波速度）；若f→∞，其基阶模式V〓→V〓（V〓为中间层介质的横波速度）；若三层介质中存在液体夹层，当f→OHz时，基阶模式V〓→V〓，而基阶模式在高频段存在一个截止频率，截止频率处的瑞利波速度V〓→V〓；由此可判定，野外实测的相速度频散曲线不仅有基阶导波模式，同时还应有高阶导波模式波的存在，接收信号中存在模式间的跳跃，因此频散曲线会产生"之"字形现象。

We use mechanics testing method like stretch and bend to test the 3mm magnesium alloy(MB3) after friction stir welding. The stretch sample can show no less than 70% of raw materials performance when the condition is suitable: R= 1500r/min,v = 90mm/min,R/v=16.7 and F=1470N. Curve intensity of the joint reaches 90.2% and 83.0% at obverse and inverse curve separately.

利用拉伸、弯曲等力学测试手段对搅拌摩擦连接的3mm厚MB3镁合金板进行机械性能检验，检验结果为：在使用焊接合理工艺参数R=1500r／min，v=90mm／min，R／v=16.7，F=1470N的情况下，拉伸试样70％以上断裂于母材，接头正弯与背弯强度分别可以达到母材的90.2％和83.0％。

V-I transmission matrix method is presented firstly in this paper to analyze the reflection spectral characteristics of fiber grating F-P cavity and the V-I transmission matrix model is established.

本文首次将V-I传输矩阵法用于光纤光栅F-P腔反射光谱特性的分析，并建立了V-I传输矩阵模型。

The optimal processing conditions are as follows: roasting temperature at 1 000℃, roasting time for 40 min, the ratio of NbH dosage to theoretic dosage at 1.1. The specific capacity of niobium suboxide of preparation by agate grind procedure is 69.50 mF·V·g-1, the loss is 11.25%, the leakage current is 1.8×10-4A·F-1·V-1, and the electrical properties are better than that of the national standard (GB/T 3136-1995) of FTa16-300 tantalum powder for capacitor.

用正交试验法及方差分析对玛瑙研磨工艺进行优化，得到制备低价铌氧化物最佳条件是：焙烧温度为1 000℃，焙烧时间为40 min， NbH用量与理论量之比为1.1，所制得的产物杂质含量低，比容为69.50mF·V·g-1，损耗为11.25%，漏电流为1.8×10-4A·F-1·V-1，其电性能指标高于FTa16—300电容器钽粉国家标准(GB/T 3136—1995)所规定的值。

In 2004 Zhang Zhongfu presented the concept ofadjacent vertex distinguishing total coloring whose content is: Let G be a connectedsimple graph with order at least 2, k be a positive integer and f be a mappling fromV∪E to {1,2,...,k}. Let C={f}∪{f|uv∈E,v∈V}for all u∈V. If (1) for any uv, vw∈E,u≠w, we have f���f;(2) for any uv∈E, we have f���f, f≠f, f≠f,then f is called a k-proper total coloring of graph G.

第三章和第四章主要研究了两种联图的邻点可区别全染色，邻点可区别全染色的定义是张忠辅在2004年提出来的，其内容为：设G是阶至少为2的简单连通图，k是正整数，f是V∪E到{1，2，…，k}的映射，对任意u∈V，记C={f}∪{f|uv∈E，v∈V}。

The rabbits were feeded by estradiol valerate everyday as follows. Group A: E〓V 1. 8mg/d, group B: E〓V 3. 6mg/d, group C: E〓V 7. 2mg/d, group D: E〓V 3. 6mg/d+MPA 3. 6mg/d, group E was the untreated control group, group F was the untreated sham control group.

之后给予口服雌激素或联合应用孕激素共16周，给药方案如下：A组〓V 1.8mg／天，B组〓V 3.6mg／天，C组〓V 7.2mg/天，D组〓V 3.6mg/天+MPA 3.6mg/天，E组和F组均不用药。

SM and DTT resulted in stronger degree of reducement in Fv/Fm, qP, F'v/F'm and TPS II when broccoli leaves were treated with strong light. Compared to the control,ΦPS Ⅱ and F'v/F'm after chlorophyll fluorescence induction with light intensity 1000μmolm^(-2)s^(-1) for 660 seconds in SM-treated leaves decreased by about 85.71%, 80.31% in broccoli leaves treated under 1800μmolm^(-2)s^(-2) for 4h and then recovered in the dark for 12h, and in DTT-treated leaves reduced by about 22.45% and 11.48%, respectively.

硫酸链霉素或二硫苏糖醇处理使强光下青花菜叶片的Fv/Fm、光化学猝灭系数、开放的PSⅡ有效光能转化效率和实际光化学效率的下降幅度增大，SM处理的下降幅度大于DDT处理。

Results A straight line through f-V points was obtained and its intersection point with the V-axis was just the volume of titrant at the equal amount point-Ve.

结果：获得f-V点直线图，直线与V轴交点即为等量点时滴定剂体积Ve。

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。