The experimental results show that the distributions of content and toxicity equivalent quantity of PAHs in raw coal are similar to coal gasification but this compositions and contents are different. The rise of coal rank leads to the decrease of the content and TEQ of PAHs in raw coal and the increase of TEQ during coal gasification, while the content of PAHs emission from coal gasification increases first and then decreases with the increase of coal rank. The total PAHs contents generated in coal gasification of some sorts of coals are higher than in raw coal. The types of PAHs formed in coal gasification include undecomposed PAHs in raw coal, pyrosysthensis PAHs, and radical polymerization PAHs at high temperature.

試驗結(jié)果表明：煤氣化前后多環(huán)芳烴質(zhì)量分數(shù)和毒性當(dāng)量質(zhì)量分數(shù)的分布特徵相似，但多環(huán)芳烴的組成和質(zhì)量分數(shù)不同；煤化程度增加，原煤多環(huán)芳烴質(zhì)量分數(shù)和毒性當(dāng)量質(zhì)量分數(shù)減小，煤氣化多環(huán)芳烴質(zhì)量分數(shù)先增后減欧美破处女出血视频，毒性當(dāng)量質(zhì)量分數(shù)與煤化程度呈線性關(guān)系；部分煤種氣化多環(huán)芳烴的質(zhì)量分數(shù)高於原煤多環(huán)芳烴質(zhì)量分數(shù)欧美一级黄C片，且煤氣化多環(huán)芳烴的種類分為原煤未分解的多環(huán)芳烴大陆无码黄色视频、熱解合成的多環(huán)芳烴、自由基高溫縮合生成的多環(huán)芳烴在线观看国产对白网站视频免费播放。

Catarium that is naturally decomposed outdoors has an inhibitive effect on cabbage seed germination. While the inhibition effect increases with increase in extract concentration, it, however, decreases with decomposition time. With regards to the length of cabbage root, 0.1 g·mL-l aquatic extract of E. catarium inhibits root growth at every decomposition stage. With the exception of undecomposed E. catarium , other concentration extracts during decomposition enhances root growth. Aquatic extract from E. catarium also enhances cabbage stem growth.

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Article 45 Where an agency bank or a principal bank increases or decreases the charging standards of the agency commission charge at will, it shall, in addition to making rectification, return the overcharged fee and recover the undercharged fee.

第四十五條代理行或被代理行隨意提高或降低代理手續(xù)費收費標(biāo)準的，除必須糾正外一级黄色视频看看，應(yīng)將多收的費用返還人人操人人干人人操，少收的費用應(yīng)予追回。

Corporate credit will be underweighted until risk aversion decreases.

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Most yield curves will be short duration. Corporate creditwill be underweighted until risk aversion decreases.

基金將以偏低比重持有企業(yè)信貸票據(jù)，直至投資者減少規(guī)避風(fēng)險黄色视频网三级第一区第九视频。

As shown in Fig.4,the undrained shear strength of the crust layer ranges from 30 to 150 ;And the strength decreases rapidly with depth in the first 4 m.

Fig.4 所示，外殼層的被不排出溝外的修剪力量從 30 排列到 150国产v欧美v日韩综合色精；和力量以最初 4 m 的深度快速地減少又大又黄又粗又爽的免费视频。

When the undrawn films were annealed atthose temperatures, the morphologies in the lamellar crystals had change. WAXDand iR studies shown that the crystallinities incrcand, dimensions in (002) and(020) normals increased while that in (200) fold had slight decreases. The rela-tionship between the orientation of the drawn UHMWPE gel-films and the struc-ture changes and the optimum drawing temperature had been disscussed.

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Regarding the density data and acoustic data in logging material as restriction, it also establishes undrilled district log through model seismic inverse, then, calculates elastic constant of rocks, density constant of rocks and even the profile of the following three pressures (pore pressure, caving pressure, fracture pressure). In the end, this thesis can determine safe drilling mud density windows, provide reference for drilling design, guides safe drilling and decreases the occurrence of accident.

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The experiment result : In some constant flow ,the unequality degree of particle decreases while concentration of particle increases.

實驗結(jié)果表明：當(dāng)液體流量一定時91色色福利视频，顆粒的不均勻度隨濃度增加而減小。

The agitation power consumptions in boiling systems decrease uniformly with the increase of agitation speed, whereas the relative power demand (RPD-the ratio of agitation power input of HEDT for gassed system to that for ungassed system and under the same agitation speed) can maintain at a high level for high gas loadings even when the impeller is operating with a high impeller tip speed. The gas hold-up in the boiling system is much lower than that in the cold gassed system, and the gas hold-up in boiling system increases at first and then decreases with the increase of the agitation power consumption per liquid mass P(subscript m. It implies that the boiling three-phase system has a maximum gas hold-up point. The changes of nucleation site of vapour bubble and the character of suspension of the solid particles with the rotational speed of the impeller are responsible for those behaviors mentioned.

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