Propylene glycol monoether acetate was synthesized using heteropoly acid as catalyst for the firsttime.

首次以杂多酸为催化剂采用酯化法合成丙二醇单乙醚乙酸酯。

In addition, we found that there are two ultrafast exciton dynamics in Allophycocyanin trimer.

首次发展了蓝光高效双光子荧光化合物。

Constable’s landscapes met with indifference when they were first exhibited.

康斯特布尔的风景画在首次展出时受到了冷遇。

Isoquercitrin is obtained from Hypericum perforatum L.for the first time.

首次从贯叶金丝桃中分离到化合物苷。

Fleming discovered penicillin early in the twentieth century.

弗莱明在20世纪初首次发了青霉素。

The first offshore multiwave and multicomponent seismic experiment has been made by CNOOC.

中国海洋石油领域开展了首次海上多波多分量地震试验。

The ore-bearing rock is composed mainly of andesitic tuff and tuffite.

作者在赋矿层中首次发了层状电气石岩。

Hawke first hoisted his flag at Spithead.

霍克伊在斯彼特海德海峡首次升起了自己的旗舰旗。

CD outsells vinyl for the first time.

光盘的销售量首次超过塑胶唱片。

I had a crise de nerfs before the first performance.

我在首次演出前几乎崩溃。

Nicotine has been studied for the first time by pulse radiolysis techniques.

摘要首次运用电子脉冲辐解技术研究尼古丁分子的化学活性。

Wirephoto - The first electronically-transmitted photograph is sent by Western Union.

西部联合电报公司首次采用电子有线传真传输图片。

These truths were by no means self-evident when Galileo first suggested them.

伽里略首次提出这些真理时决非显而易见。

We didn’t meet anybody new at the tea party.

在茶话会上我们没有碰到任何首次见面的人。

This is the first reliable trematothoracin sawfly discovered in China and in the Jurassic Period.

这是首次在我国发可靠的陷胸茎蜂化石，也是该亚科在侏罗纪的首次报道。

Conducting the premiere of a symphony without a rehearsal requires temerity.

不排练而直接指挥一部交响乐的首次公演是鲁莽的。

Under the same chrmatographic condition, gas chromatography quantitative analysis of the butachlor and simetryne were discribed.

首次报道了丁草胺和西草净在同一色谱条件下的气相色谱定量分析。

First awarded in 1991, the Packing Room Prize is adjudicated by the Gallery's storeman, Steve Peters.

首次颁发于1991年，包装室奖被判定由画廊的仓库，史蒂夫彼斯。

This concert also included the first performance of his Septet, op. 20, which became very popular.

音乐会上还首次演奏了他的七重奏，作品第20号，后来很受欢迎。

The idea for a facsimile transmission was first proposed by Scottish clockmaker Alexander Bain in 1843.

传真传输的设想是由爱尔兰钟表匠亚历山大.贝恩于1843年首次提出。