首次的

In present study, field survey, solution culture experiment and soil culture experiment were carried out to characterize Zn uptake and accumulation of Sedum alfredii Hance.

本研究通过对中国东南部一些古老铅锌矿区植被的调查，首次发现矿山生态型东南景天是一种锌超积累植物。

And in 2008 the country achieved rice self-sufficiency for the first time in 24 years.

而在2008年，整个国家24年首次在事物的自给自足上获得了成功。

This is the first report of the presence of FMDV in bull semen due to natural infection in China.

这也是我国首次证实自然感染牛的精液被口蹄疫病毒污染。

"First cultivated in India more than 4,000 years ago, rice was planted gradually westward and is now cultivated widely in flooded fields and river deltas of tropical, semitropical, and temperate regions."

"4，000多年前首次栽种于印度，后逐渐向西传播，如今广泛栽植于水田和热带、亚热带和温带区的三角洲河谷。"

Chapter 3: Using RAKE receiver as the channel match filter, we detailed the Maximum Likelihood Sequential Estimation algorithms of multi-path CDMA signals.

第三章：对于概率检测算法，作者首次具体分析了以RAKE接收作为信道匹配滤波器时，最大似然检测器的算法设计。

The jet formation of nitromethane is taken shadowgraphy first, and effective discharge coefficient with a nozzle diameter of 2. 5mm is presented.

以再生式液体发射药火炮为工程背景，我们首次拍摄了硝基甲烷射流喷射瞬态变化过程，并实验测定了硝基甲烷从直径2.5mm直喷嘴喷射时的流量系数。

Shale is a simple and easy solution, especially for the first time gardener.

页岩是一种简单易行的解决办法，尤其是对首次园丁。

We passed through the shanty town and it was the first time I had come face to face with real poverty.

我们穿过了棚户区，那是我首次目睹了真正的贫困。注意，注意力集中

It was the first time Chinese scientists had visited the Amery Ice Shelf— the longest ice shelf in the world.

这是中国科学家首次探访世界最大的冰架——埃默里冰架。

The couple met late last month at a shindig Khlo was hosting in Los Angeles and made their public debut on Sept.

上个月末，他们于Khlo 在洛杉矶举办的器材展览会上相遇，并于9月3日首次公开亮相。

In the United States, chronic alcoholism and hepatitis C are the most common ones.

在美国，慢性酒精中毒，肝炎是最常见的。

If you have any questions, you can contact me anytime.

如果有任何问题，你可以随时联系我。