首次的

The first commercialization of catalytic distillation technology is for synthesis of MTBE, a gasoline octane improver.

催化蒸馏技术的首次工业化是为了合成MTBE，一种汽油辛烷值改进剂。

It was her first solo concert in North America.

这是她在北美的首次个人演唱会。

This is the inaugural meeting of a newly formed group.

这是首次召开会议，对新成立的集团。

It was the first time that using 〓 cell line and normal immunity inbreed line BalB/c mice as objects to construct the subcutaneous transplanting ovarian cancer model. Histopathological experiment proved that the transplanting tumor was undifferentiated cancer. The ovarian tumor marker 〓 and the epithelial tumor marker 〓 were positive in the transplanting tumors. According to these proofs we thought we had already succeeded in constructing animal tumor model.

本实验首次采用卵巢癌〓细胞系，以正常免疫力的雌性近交系BalB/c小鼠为对象，建立了卵巢癌皮下移植瘤模型，经病理组织学检查证实移植瘤为低分化癌，经免疫组化检测证实移植瘤组织中卵巢肿瘤标志物〓和上皮性肿瘤标志物〓表达阳性，据此我们认为动物肿瘤模型建立成功。

The first talks between the Thai Prime Minister Abhisit Vejjajiva and the red shirt anti-government demonstrators who've been paralyzing Bangkok have ended inconclusively, although they will continue on Monday.

泰国反政府红衫军示威者导致整个曼谷瘫痪。泰国总理阿披实与红衫军之间的首次谈判结束，未取得任何成果，尽管在周一将继续进行对话。

The design of the planetary indexing cam mechanism is put forward for the first time.

本文首次提出了一种行星分度凸轮机构的设计构想。

It's the first industrial action of the airline for 13 years.

这是该航空公司13年来的首次罢工。

It's the first industrial election action of the airline for thirteen years.

这是13年以内的首次大罢工。

In chapter 1, as a preparative knowledge, the main results about symmetry theoryand Wus method are introduced, in addition some fundamental definitions, such as trans-formation group, infinitesimal operator, prolongation, first integral, infinitesimal criterionfbr invariance of an ODE, characteristic set are recalled.

第一章中作为预备知识简单介绍了对称理论和吴方法，并给出了一些基本概念和理论，如变换群、无穷小算子、算子延拓、首次积分、微分方程在对称下不变的判别准则和微分特征列集算法。

In terms of country, China is the first time in eight weeks since the emergence of a net inflow.

在国家方面，中国是在8个星期以来出现的净流入首次。

She gently rebuff ed him, but agreed that they could be friends

她婉言拒绝了，但同意作为朋友相处。

If in the penal farm, you were sure to be criticized.

要是在劳改农场，你等着挨绳子吧！