首次

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

这是首在我国可靠的陷胸茎蜂化石，也是该亚科在侏罗纪的首报道。

CD outsells vinyl for the first time.

光盘的销售量首超过塑胶唱片。

I had a crise de nerfs before the first performance.

我在首演出前紧张得几乎崩溃。

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

首展了蓝光高效双光子荧光化合物。

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

伽里略首提出这些理时决非显而易见。

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

西部联合电报公司首采用电子有输图片。

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

作者在赋矿层中首了层状电气石岩。

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

在茶会上我们没有碰到任何首见面的人。

Fleming discovered penicillin early in the twentieth century.

弗莱明在20世纪初首了青霉素。

Hawke first hoisted his flag at Spithead.

霍克伊在斯彼特海德海峡首升起了自己的旗舰旗。

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

首从贯叶金丝桃中分离得到化合物异槲皮苷。

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

康斯特布尔的风景画在首展出时受到了冷遇。

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

摘要首运用电子脉冲辐解技术研究尼古丁分子的化学活性。

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海上多波多分量地震试验。

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公演是鲁莽的。

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

首以杂多酸为催化剂采用酯化法合成丙二醇单乙醚乙酸酯。

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

首颁于1991年，包装室奖被判定由画廊的仓库，史蒂夫彼得斯。

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

首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。

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

输的设想是由爱尔兰钟表匠亚历山大.贝恩于1843年首提出。

Conclusion:Oleanolic acid and daucosterol were isolated from this plant for the first time.

齐墩果酸和胡萝卜苷为首在该植物根中分离得到。