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Assumes that molecules are rigid ball, intermolecular End X are all elastic collision, in addition to the instant of collision, the molecular force can be ignored, then the chemical pure gas, K = 4nd2πkT = 4d2pπ, where: k for XmSkTSm Boltzmann constant, m is molecular weight, d the molecular diameter, n the molecular number density, p the gas pressure, T is thermodynamic temperature.

假定分子是刚性球，分子间完X全是弹性碰撞，除了碰撞瞬间外，分子力可以忽略，那么在化学纯的气体中，K＝4nd2πkT＝4d2pπ，式中：k为XmSkTSm玻耳兹曼常量，m为分子质量，d为分子直径，n为分子数密度，p为气体压强，T为热力学温度。

Methods Firstly, 2-D matrix X with each ECG-cycle as a column vector was constructed. Secondly, the principal components of X based on Karhunen-Loeve Transform were gotten to reconstruct X from the first eigenvector of XXT.

首先以逐拍心电波形为列矢量构造二维矩阵X，再通过KL变换得到X的主分量，然后由X的最大特征向量重构X。

Innovative, classic, elegant or intelligent -- in this flagship showroom, Duravit not only showcases its 2008 new products, but its all time classics: the 70 year popular retro-classic 1930 range; intelligent lighting bathroom furniture e-mood with simple yet luxurious Happy D.; the sculpture-like 2006 Red Dot award winner Starck X bathtub in the centre of showroom; the Good Design award winner Blue Moon pool bath; and the practical and beautiful Fogo bathroom furniture with flowing and no-nonsense design.

主题贯穿于整个产品系列；智能照明浴室家具产品e-mood搭配风格简约、洗练却又与奢华息息相融的快乐D。；荣获06年度红点大奖的斯达克X浴缸宛如一件雕塑品，静静地屹立在偌大的展厅中；获得Good design大奖的大容量蓝色月亮系列浴缸；实用美观的弗格系列浴室家具沿袭了Duravit一贯的高贵品质，设计上简炼朴实、风格统一而又气韵流畅。

In the present paper, we determined the mitochondrial DNA sequence 539bp of the high variable I D-loop regions(mtDNA HVS-I) for 243 domestic fowls 19 were Wugu (or black-bone chicken and 8 non-wugu breeds/races and 38 red jungle fowls (Gallus. Gallus. spadiceus and Gallus. Gallus. jabouillei). We also sequenced 289bp mitochondrial DNA of Cyt-b for 5 red jungle fowls; D-loop region (mtDNA HVS-I)for 19 individuals Guinea fowl and 18 individuals mule chickens (Guinea fowl $ x Wugu chickens^ ) respectively; mtDNA HVS- II of D-loop region for 34 individuals of domestic fowls and red jungle fowls in 690bp and the MC1R code gene in 945 bp.

本文共测定了19个乌骨鸡品种及8个非乌骨鸡品种的243个家鸡和38个原鸡个体(属于Gallus.gallus.spadiceus和Gallus.gallus.jabouillee亚种)的线粒体D-环高变区(mtDNA HVS-Ⅰ)539bp的部分序列，另外还测定了5个红原鸡个体线粒体细胞色素b的289 bp序列、19个珍珠鸡个体、18个骡鸡个体的线粒体D环高变区序列、30个家鸡个体线粒体D环非高变区的690bp序列以及34个家鸡及原鸡个体的MC1R基因编码区的945bp。

If R admits a generalized derivation δ with d=0 such that either δ=x°y or δ+x°y=0 holds for all x,y∈I,and if δ is not the identity map,then R is commutative.

设R是素环，I是R的非零理想，如果R容许一个非单位映射的左乘子使得对所有x，y∈I满足δ=x°y或δ+x°y=0，那么R可交换。

In treatment group, 42 cases received 50 Gy radiation, at 2 Gy per day, 5 d per week in the upper mediastinum, hilus of lung, below the primary focus first and then underwent X-knife for the primary focuses, and other 14 recurrent and metastatic cases received irradiation of 8-12 Gy per day, 5 d by X-knife alone.

治疗组中42例为外照射上纵隔、同侧肺门、隆突下及原发灶50 Gy/25F后加用X线刀治疗原发灶5 Gy/次×5次；14例为肺转移癌或手术后外周孤立性复发病灶行单纯立体定向放射治疗，8～12 Gy/次×5次。

The newly publish ed ISO Standard for determining the speed of medical X-ray films specifies the u se of X-ray beam for the exposure of the films during their sensitometric tests; though this method is precise,it requires the use of sophisticated equipment an d time consuming operations.

新颁布的测定医用X线胶片感光度的国际标准规定，用X-射线作为感光测定曝光时的光源，此法精确，但所需设备复杂，操作耗时。

A set of spectific primers was syn thesized according to HBV DNA sequence of Chinese strain, the whole X region was amplified by PCR method from the serum of 9 patients with chronic HBV infection , and then the PCR products were subcloned into pGEM Teasy vectors. Clones were randomly selected to be sequenced. Comparison of the cloned sequence was made to find the difference. After being compared, each sequence of selected clones is o f difference. The point mutation scattered through X region. Deletion mutations were detected in 19 clones of 37(51.4%), which caused different carboxyl endings of X protein. There is a hot region (after 123 aa code) where deletion mutation frequently happens.

以中国株HBV基因序列为依据，设计特异性多聚酶链反应引物，自9例慢性HBV感染患者血清中扩增HBV X基因，克隆入pGEM Teasy质粒，随机挑选克隆进行D NA测序以确定病毒的变异程度。37例测序结果提示来源于不同患者HBV X基因序列高度保守，但每个序列均不一致。X区除了存在广泛的碱基点替换突变外，序列的缺失突变占测序克隆总数的51.4％（19／37）；氨基酸缺失及移框突变多发生于123位氨基酸残基之后，可导致X蛋白多种羧基端形式。

Expose the filter to the x-ray film for 1 hour. The film develop with D-11 developer for 8 ～10 minutes, fix for 10 minutes to get the result.

加ECL发光液于膜上，于x光暗盒中对CT用x光胶片曝光1小时，然后采用D-11显影液显影8～10分钟，一般市售定影剂定影10分钟，得到结果。

A deletionof T base pair was detected at 7bp in intron 1 of sheep TNNC2 gene,which was named allele D.The frequency of allele D deleted was 0.78,0.77 and 0.71 in Small-tailed Han sheep,Tan sheep and Inner Mongolia sheep,respectively,and thedistribution of gene and genotype were no significant difference among the three sheeppopulations by X~2 test(p＞0.05).The association analysis between the genotypes and meatquality traits indicated the genotypes significantly influenced sheep meat quality.

在供试绵羊群体中检测到TNNC2基因第一内含子第7bp处一个T碱基缺失，并命名为D等位基因。D等位基因在供试的小尾寒羊、滩羊及蒙古羊群体中频率分别为：0.78、0.77和0.71.x~2检验表明，该位点基因及基因型频率在小尾寒羊、滩羊和蒙古羊试验群体中差异不显著(P＞0.05)。

According to the clear water experiment, aeration performance of the new equipment is good with high total oxygen transfer coefficient and oxygen utilization ratio.

曝气设备的动力效率在叶轮转速为120rpm～150rpm时取得最大值，此时氧利用率和充氧能力也具有较高值。

The environmental stability of that world - including its crushing pressures and icy darkness - means that some of its most famous inhabitants have survived for eons as evolutionary throwbacks, their bodies undergoing little change.

稳定的海底环境─包括能把人压扁的压力和冰冷的黑暗─意谓海底某些最知名的栖居生物已以演化返祖的样态活了万世，形体几无变化。