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Density Functional Theory method was used to optimize the geometries of 209 PCDE molecules, 209 PBDE molecules and 75 PCDD molecules at the B3LYP/6-31G* level. Using computed structural parameters as theoretical descriptors, the forward stepwise multiple regression technique was adopted to obtain QSPR models of environmental partition properties for these POPs by using GQSARF 2.0 and SPSS12.0 for windows programs. The obtained QSPR models are as follows:(1) QSPR models for predicting subcooled liquid vapor pressure, n-octanol/water partition coefficients lgK_(ow and subcooled liquid water solubilities -lgS_(w,l of PCDEs, of which correlative coefficients (R~2) are 0.988, 0.958 and 0.959 and the root-mean-square-error of estimation are 0.134, 0.116 and 0.327 respectively.(2) QSPR models of lgPL and n-octanol/air partition coefficients lgK_(oa for PBDEs, which both contain three structural parameters. The values of R2 for the two models are both 0.997 while the values of RMSEE are 0.073 and 0.062 respectively.(3) QSPR models of lgKow and–lgS_ for PCDEs, which both have one variable (mean molecular polarizability,α). The values of R~2 for the two models are 0.978 and 0.866 and the values of RMSEE are 0.300 and 0.270 respectively.(4) The molecular structures of 24 substituted naphthaline compounds were optimized using Hartree-Fock and DFT methods at four different levels and the same means was used to obtain four three-parameter (EHOMO, q~+ andα) QSPR models of lgK_. The model at the HF/6-311G** level is the best one of which R2 is 0.9662 and RMSEE is 0.380.(5) QSPR study for environmental partition properties of PCDEs was also performed using position of Cl substitution method in which simple parameters of substitution position were taken as descriptors. The multiple linear regression was performed with GQSARF 2.0 and SSPS 12.0 for windows programs to obtain QSPR models of lgP_L, lgK_ and–lgS_ for PCDEs of which R~2 are 0.991, 0.983 and 0.965 and RMSEE are 0.311, 0.100 and 0.300 respectively.

采用密度泛函理论方法在B3LYP/6-31G*水平上对PCDEs、PBDEs和PCDDs的分子结构进行了全优化计算，以计算得到的量子化学参数作为理论描述符，采用GQSARF 2.0和SPSS 12.0 for windows统计程序进行正向逐步回归分析，建立了这些POPs的环境分配性质的QSPR模型：(1) PCDEs的过冷液体蒸汽压、正辛醇/水分配系数lgK_(ow和水溶解度-lgS_(w，l的QSPR模型，这3个QSPR模型的相关系数(R2)分别为0.988、0.958和0.959，估计的均方根误差分别为0.134、0.116和0.327；(2) PBDEs的lgPL和正辛醇/空气分配系数lgK_(oa的QSPR模型，这两个模型都包含三个分子结构参数，其R~2都为0.997，RSMEE分别为0.073和0.062；(3) PCDDs类化合物的lgK_和-lgS_w的QSPR模型，两个模型都只含一个变量，其R~2分别为0.978和0.866，RSMEE分别为0.300和0.270；(4)采用Hartree-Fock和DFT方法，在4种不同水平上优化计算了24个取代萘系列化合物的分子结构，采用上述同样的方法分别建立了四种水平上的三变量lgK_模型，通过比较得到，在HF/6-311G**水平计算得到的模型最好，R为0.966，RSMEE为0.380；(5)同时，采用氯原子取代位置方法对PCDEs的环境分配性质进行QSPR研究，建立了PCDEs的lgPL、lgK_和-lgS_的QSPR模型，其R~2分别为0.991、0.983和0.965，RSMEE分别为0.110、0.100和0.300。

Next a window pops up where you can set angle which Ortho uses.

下一步弹出一个窗口，您可以设置使用的角度来奥托。

When the World Machine is finished, an amazingly detailed in-game landscape pops out, ready to be populated with surly Klingons, giant radiation towers, and maybe even a tribble or three.

当world machine完成以后，一个非常细致的地貌将会呈现出来，已经做好了被klingon殖民的准备，或者是庞大的辐射塔，甚至是一个tribble。

Up pops a magical whiskered janitor played by Brian Doyle-Murray, who zaps Mike back into his younger self.

突然一个神秘的大胡子学校工友（Brian Doyle-Murray饰演）出现了，他把Mike变回了年轻的Efron。

Incipient trends in the real estate market also challenge the view of a bubble wobbling before it pops.

房地产市场初现的趋势，也让人们对所谓泡沫将会破裂的观点提出了质疑。

I look like one of those, um, astro pops.

我像个。。。俄罗斯方块

But, as I fantasise about this sweet new world, the question pops up: who would I have sex with?

但是，当我沉醉于这一美好新世界之时，一个问题突然冒了出来：我以后跟谁行周公之礼？

Mr Innes said: Because it's so light it pops out of the water like a cork.

Innes先生曾经说道：由于它非常的请，所以它能像软木一样浮在水上。

Whenever someone pops up as the reincarnation of a prior Lama, the Chinese government can say they didn't approve the reincarnation and then haul them off to wherever dissidents go when they disappear.

不管什么时候有人成为一个较早的喇嘛的转世，中国政府会说，他们没有允许这个转世，然后把他们送到持不同政见者消失时去的地方。

Typically, people have a couple of pops at the bar, put on earphones; they put on blindfolds, they take off their shoes, and they go to sleep.

通常情况下，人们在酒吧那喝了几杯，然后带上耳机，带上眼罩，脱下鞋子，睡觉。

London based fashion photographer Matt Irwin might be is the next big thing in fashion photography.

总部位于伦敦的时装摄影师马特欧文可能会是下一件大事的时装摄影。

Based on IMC system,the response would be better if the model matched more satisfactorily.

由于系统基于内模控制设计，故模型匹配度越高，系统响应越好。