1、

In this paper the physical acoustic method ( the Kirchhoff's approximation) is extended to treat the scattering of a nonrigid surface in order to estimate the target strength of tar-gets with absorbing coatings.

本文将物理声学方法(Kirchhoff近似)推广到非硬表面的情况,以解决带有吸声覆盖层的目标的目标强度计算问题。

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2、

The proper amount of tannic acid added was 4% of cut tobacco, while tar in cigarette was reduced by 19% and tar reverted to mutant colonies by 21.9%, without effects on the taste of tobacco.

鞣酸添加量为烟丝的4%较理想,卷烟焦油含量下降19%,焦油回复突变菌落数下降21.9%;这一添加量既能降低焦油的致突变性,又对原烟的香吃味无影响。

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3、

Study on hydrogenation of the refined coal tar pitch with tetralin as hydrogen-donor solvent for high performance carbon fiber

制备高性能碳纤维用煤沥青以四氢萘为供氢溶剂的加氢研究

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4、

Coking Test with Mixture of Tar Slag and Coal

焦油渣配煤炼焦试验

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5、

The thick, tar-like oil requires extra heat to flow.

这种石油浓稠、类似于柏油,要使它流动需要额外的热量。

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6、

Study on property and modification of coal tar pitch for C/ C composites

炭/炭复合材料用煤沥青的改性及性能研究

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7、

Threshold autoregressive model ( TAR) is a nonlinear sequential model which is segmentedly linear.

门限自回归模型(TAR)是一种分段线性的非线性时间序列模型。

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8、

Now we will do the same operation again, but this time using the tar utility.

现在,再次执行相同的操作,但是这一次使用tar实用程序。

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9、

Road-paving asphalt meeting the required specifications can be prepared by mixing coal tar with fluid catalytic cracker ( FCC) bottoms and whole used tire, excluding steel belts, at proper ratios.

把煤焦油、流化催化裂化(FCC)重油和全旧轮胎(除去钢带)按合适的比例混合,就可得到符合规格要求的铺路沥青。

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10、

On its own, tar is a very useful tool for copying files and directory structures.

就其本身而言,tar是一种非常有用的工具,可用于复制文件和目录结构。

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11、

Study on the thermal polymerization modification of coal tar pitch

煤沥青热聚合改质研究

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12、

Study on the oxidation thermal polymerization process of coal-tar pitches

煤沥青氧化热聚合工艺的研究

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13、

Influence of Qi on thermal polymerization modification of coal-tar pitch

喹啉不溶物对煤沥青热聚合改质影响的研究

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14、

Study on the thermal polymerization preparation of pre-polymer with high-content mesophase from coal tar pitch

软沥青热聚合制备高含量中间相预聚体的研究

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15、

The change rules of coal tar pitch's TI, QI,β-resin, softening point and coking value during the thermal polymerization modification were investigated in an autoclave.

在热聚合反应釜中,研究了煤沥青中甲苯不溶物、喹啉不溶物、β树脂、软化点及结焦值等质量指标在热聚合改质过程中的变化规律。

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16、

The results indicate that by co-coking of coal and waste tire, the H_2 and CH_4 contents in the coke gas increased and thermal value of the gas was increased by at lest 23%; the yield of tar and its quality were also improved;

结果表明,共炼焦可改善煤气组成,增加H2、CH4含量,至少提高煤气热值23%,提高煤焦油收率和质量,并且废橡胶颗粒度明显影响焦炭质量。

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17、

Application of Gas Chromatographic Analysis Method to Examine Refined Products from Tar

应用气相色谱分析法检测焦油精制产品

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18、

Effect of cracking reaction of tar component on the activity of calcium oxide

氧化钙催化活性在焦油裂解过程中的变化规律

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20、

The experiments were designed to remove HCl, NH 3, organic sulphur and coal tar component in high temperature coal gas, in combination and simultaneously by using a fixed-bed reactor at the reaction temperature range from 300 ℃ to 550 ℃.

在固定床反应器中首先对高温煤气中氨、有机硫化物、氯化氢及焦油4种污染物进行了同时脱除,其中选择CS2和1-甲基萘分别作为高温煤气中有机硫化物和焦油蒸气的模型化合物。

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