查询词典 k

It is shown that every minimum geodetic set of a graph does not contain its cut-vertices, and if G is a block graph with n≥3 vertices and k≥1 cut-vertices,then g=n-k.

图的每个最小测地集都不包括它的割点，如果图G是一个有n≥3个顶点，k≥1个割点的块图，那么g=n-k。

To prove one edge union of k-shell graph is cordial, firstly fix the labeling of vertex of common edge(label u with 0 and v with 1), then according to the value of the graph order n module 4 to class the k shell gaphs to four cases, and to divide to small cases in every shell graph.

本文研究k-贝壳图的亲切标号时，在固定了公共边上的点的标号(对u标号0且v标号为1)之后，我们采用如下方法：首先，以每个贝壳图的顶点数对4取模的余数来分类，这样就得到了四种(来源：d1ABC论文网www.abclunwen.com)不同情况的贝壳图；然后在每个贝壳图中再分情形进行标号；最后，通过证明得到这种标号方法是满足亲切标号的定义的，从而证明了k-贝壳图的亲切性，成功的解决了Sethuramam和Selvaraju猜想，证明了其正确性。

Partition search follows this strategy: construct a data structure for quick search and location, and divide the (K-1)th frequency itemset sequence into a number of continuous partitions to obtain a number of disjoint sub-sets of (K-1)th order frequency itemset.

分区查找基于以下策略：建立一种可快速搜索定位的数据结构，将频繁(K-1)-项集序列划分为若干连续的分区，形成(K-1)阶频繁项目集的若干不相交的子集。

Both proline content and K+ content in leaf at four different ABAconcentrations increased more than that in control plant, exogenous ABA promotedproline generation and K+ accumulation in leaf resulting in osmoregulation.

四种ABA浓度下叶片中的脯氨酸和K+含量均比对照明显升高，外源ABA能够促进叶片中脯氨酸形成和K+的积累，导致渗透调节的发生。

According to the partial correlation coefficient between the growth of forest and leaf nutrient,the N、 K content in leaf of clone S2 affected the growth of breast-height diameter mostly,and influenced the growth of tree height were Mn 、 P 、 N、 Cu content.The K、 N、 P content in leaf of clone S8 affected the growth of breast-height diameter mostly,and influenced the growth of tree height were Ca、 N content.

4从林木生长与叶片营养的偏相关系数大小来看，影响无性系S2人工林胸径生长的主要是叶片中N、K元素含量，而影响树高生长的主要是叶片中Mn、P、N、Cu元素含量；在无性系S8人工林中，影响胸径生长的主要是叶片中K、N、P元素含量，影响树高生长的主要是叶片中Ca、N元素含量。

In 2003, we succeeded in manufacturing 30 types of K series program-controlled paper cutting machines by using the most advanced techniques in the world. Furthermore, in 2006, the computer-controlled, high-speed, high-accuracy paper cutting machine K-CD series was listed in the National Torch Project. GUOWANG's strategy had led the company to gain more than 10 years of continuous sales increase. In April 2009, we imported 7 sets of CNC pentahedron machining center which lead GUOWANG to be the leading manufacturer of Chinese paper cutting machine industry that owns the largest scale, most complete and advanced machining centers.

从2003年采用国际最先进切纸机生产技术实现生产K系列30种型号程控切纸机到2006年K-CD型电脑程控高精度高速全开切纸机被列入国家火炬项目，我们一直朝这一目标看齐、迈进。2009年4月份我公司又引进了7台进口CNC五面体加工中心生产设备，成为目前全国切纸机行业当中拥有加工中心最齐全，最庞大，最先进的生产商。

The second experiment is to fabricate white light LED from red and green phosphors pumped by blue light LED. The blue light LED we used in our experiment has the wavelength range between 450 and 452.5 nm, and the chip size is 17 mil *14 mil. There are two kinds white light LED we fabricated in the experiment. There are three blue light LED chips bonded in single package of both kinds package. The different of the both packages is mixed phosphor of encapsulation. One of the experimental devices was encapsulated YAG phosphor mixed silicone to fabricate white light. The other is red and green phosphor mixed encapsulation. The compared and focused parameter was luminous efficiency. YAG phosphor pumped white light has the luminous efficiency 72 lm/W, CRI 70, CIE(0.32, 0.33), CCT 5622°K at the operating current 60mA. On another hand, red and green phosphor pumped white light LED has the luminous efficiency 55 lm/W, CRI 90, CIE(0.31, 0.32), CCT 6479°K at the operating current 60mA. We fabricated the red and green phosphor pumped white light LED, and proved that it could has much higher CRI under similar compared conditions, CIE xy and CCT.

第二个实验是使用蓝光LED晶粒来制作白光元件，蓝光LED晶粒波段范围在450 ~ 452.5 nm，晶粒大小为17*14 mil，以三颗蓝光LED晶粒搭配YAG萤光粉(黄绿光 540 nm)制成白光元件，再以另外三颗蓝光LED晶粒搭配红色萤光粉(613 nm)混合绿色萤光粉(519 nm)制成的白光元件进行发光效率比较；搭配YAG萤光粉的白光元件在注入60 mA的电流时所量测到最大的发光效率是在72 lm/W，演色性数值大约为70，CIE色度座标为(0.32， 0.33)，色温是在5622 °K；而搭配红色萤光粉混合绿色萤光粉的白光元件在注入60 mA的电流时，最大的发光效率在55 lm/W，演色性数值大约为90，CIE色度座标为(0.31， 0.32)，色温在6479 °K；证明了蓝光LED晶粒搭配红色萤光粉混合绿色萤光的白光元件演色性指数可以高达90 以上的结果。

We find the most contributions of form factors come fromΨπ,K andΨB, but the contributions ofΨσfrom the pion and the kaon meson, the contribution ofΔfrom B meson are very small, and can be neglected in most of the calculations.

结果发现π、K介子波函数中的Ψπ，K，B介子波函数中的ΨB对形状因子的贡献最大，而π、K介子波函数中的Ψσ，B介子波函数中的Δ对形状因子的影响很小，可以忽略。

And for Ca and Mg, K can promoted absorption of Ca, Mg in a proper concentration, or overabundance K concentration will prohibite the absorption of Ca, Mg.

适当提高营养液中P、K的浓度，对N、P、K的吸收均具有促进作用。

In this paper, phase equilibria of quinary reciprocal system K~+, Na~+//CO_~(2-), SO_4~(2-), B_4O_7~(2-)-H_2O and its subsystems (two ternary systems and three quaternary systems) at 273 K were studied by isothermal evaporation method .

采用等温蒸发法研究了五元体系K~+，Na~+／／CO_3~(2-)，SO_4~(2-)，B_4O+7~(2-)-H_2O及其中两个三元子体系、三个四元子体系273 K相平衡关系。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。