We can't plant the vegetables while the erath is still frostbound.

The best of the early measurements of the earth's circumference was made by Eratosthenes.

早期测量地球周长的最准确结果是由埃拉托斯特尼得出的.

BC-Trojan War: Troy was sacked and burned, according to the calculations of Eratosthenes.

公元前 1184年 的今天,特洛伊之战: 特洛伊城被洗劫一空并被焚毁, 此日期由埃拉托斯特尼计算得出.

Erbium-doped planar optical waveguide amplifiers have potential application in the area of aviation communications.

掺铒光波导放大器(EDWA)在民航机场通信领域具有广阔的应用前景.

A novel double-cladding erbium-ytterbium co-doped fiber amplifier ( EYCDFA ) based on phosphate glass fiber is proposed.

提出了一种新的基于磷酸盐的铒镱共掺双包层掺铒光纤放大器.

Erbium-doped fiber ( EDF ) as the plus medium is the key component of EDFA.

掺铒光纤 ( EDF ) 作为增益介质,是EDFA的关键组成部分,其结构设计和制造工艺也受到了广泛的研究.

The body of the source is composed of high-powered pump laser and erbium doped fiber.

光源主体部分是增益介质掺铒光纤和 高性能 的泵浦激光器.

It has basic significance to study the chaos of Erbium-doped fiber laser and optical spatiotemporal pattern.

因此,这两方面的研究都具有重大的基础性意义.

In this paper the nonlinear distortion AM-VSB CATV system with erbium-doped fiber amplifier ( EDFA ) was studied theoretically.

本文从理论上研究了有 掺铒光纤放大器 的光纤调幅有线电视系统的非线性失真问题.

Methods MR examinations with TORSOPA and subsequently with ERC were performed in 123 patients.

方法　对123位患者行前列腺MRI检查,每位患者先用TORSOPA检查,然后行ERC检查.

OBJECTIVE : To observe the effect of ERC on tumor.

目的: 观察托盘根乙醇提取物(ERC)对肿瘤生长的影响.

Your organization should arrange and reserve a display area for the mobile ERC.

申请机构须安排及预留展览场地以供流动环境资源中心车辆使用.

Today I'm in Erdos, tomorrow I'll be Awati. There are many areas that need our attention.

今天是鄂尔多斯, 明天是阿瓦堤, 有很多地方都要去关注.

Could you show me some Erdos sweaters?

您能给我看一下鄂尔多斯羊毛衫 吗 ?

The parasitoid of the leaf miner , Pnigalio phragmitis Erdos, prefers the third instar to parasitizing.

芦苇格姬小蜂为美洲斑潜蝇的幼虫寄生蜂, 比较喜欢在美洲斑潜蝇的三龄幼虫上寄生.

Take the water ere the clock strikes twelve.

在12点前取水。

I shall start ere you return.

在你回来前我就会出发.

Could it possibly be that he might be that ere the day was done!

难道在天黑之前,他也可能变成这个样子吗?

Let us part, ere the season of passion forget us.

分手吧, 趁情热季节未把我们忘却.

It was not long ere a call came from the house and recalled me from my reflections.

不久，家里打来了电话，把我从沉思中唤醒。

To fazarts , hard hazards are death ere they come there.

胆小鬼遇到危险便吓得要死.