It was quite at home, as if it were perching on a twig.

Perching on a twig, the bird sang day after day for the tree.

鸟儿坐在树枝上, 天天给树唱歌,树呢,天天听着鸟儿唱.

Perching can be discouraged by scaring, shooting or chemical repellants.

轰吓 、 射杀或者用化学忌避剂可防止鸟类栖息.

Not only does it has large lifting capacitymoment and height but also good perching ability speed.

塔式起重机的起重力矩、起重量和起升高度都相当大,同时还有良好的低速就位性能.

A few house-sparrows are perching on the big tree in front of my house.

门口大树上停着几只家雀儿.

Perching on the periphery of every orchestra is a percussion player.

坐在每支管弦乐队外围的是打击乐演奏者.

The response mechanism of cetylpyridinium perchlorate and cetylpyridinium periodate ion-selective electrode has been studied.

研究了十六烷基吡啶-高氯酸根及十六烷基吡啶-高碘酸根离子选择电极性能,讨论了电极响应机理.

Copper oxide is a kind of catalyst that accelerates the decomposition of ammonium perchlorate.

氧化铜是促进复合固体推进剂中高氯酸铵分解的一种催化剂.

A new method for determination of starch content with perchloric acid is developed.

采用高氯酸法测定纺织品中的淀粉含量.

An ester or a salt of perchloric acid.

锰酸形成的一种盐,含有锰作为其阴离子.

As manufacturer and exporter, we make a certain contribution to the development of perchloric acid.

使公司作为生产商和出口商, 在国内高氯酸的发展中做出了一定的贡献.

METHODSColorimetry was used with vanillin-perchloric acid as coloring reagent to determine the content of total saponins.

方法采用香草醛 - 高氯酸显色,比色法测定总皂苷的含量.

The results indicate that the product yield of perchloric acid reaches 80 %.

实验结果表明,可以得到产率80%以上的高氯酸.

Production and market status of ethylene perchloride at domestic and abroad is introduced in this article.

介绍了四氯乙烯国内外生产现状和市场状况.

A dry cleaning facility may not include operation of transfer-type dry cleaning equipment using perchloroethylene.

一干洗设施可能不包括的运作,转移型干洗设备的使用氯乙烯.

Are there any connection between the changes of environment, history and the percipience of land?

历史与环境的变迁之于人们对土地认知又有什麽关连?

However Vermeer's eyes are so percipient that no instrument is able to substitute for them. "

但是,无论他使用了什么工具,画家那双具有鉴赏力的眼睛却是什么也无法替代的.

Doctor Percival had struck him hitherto as a very genial man.

珀西瓦尔医生给他的印象一直是个和蔼可亲的人.

Conclusion: Sheard and Percival criteria are effective diagnostic aids or guides to predict ocular symptoms.

结论: Sheard准则和Percival准则为评价双眼水平位均衡的有效方法.

Let the coffee percolate for seven minutes.

让咖啡滤7分钟.

Unfortunately, his words did not seem to percolate through their bureaucracy with customary efficiency.

可惜, 他的话似乎并没有通过其素以效率著称的官僚机构传达到下面.