Solid laser is a four-level system.
固体激光器是一个四能级系统。
This is a four-level English program.
这是一个分为四级的英语课程。
The Kerr nonlinearity of a left-handed material is analyzed in a four-level atomic system.
分析了四能级原子系统中左手材料的克尔非线性特性。
The tower sits atop a four-level podium that houses large banquet, meeting, dining, fitness and spa facilities.
塔楼在四层裙房内包含了大型宴会厅，会议中心，餐饮区，健身中心和SPA设施。
In this paper, a direct instantaneous torque control (DITC) of switched reluctance motor (SRM) with a four-level converter is presented.
主要论述了基于四电平功率变换电路的开关磁阻电机直接瞬时转矩控制。
In this paper, we use the dressed-atom approach to derive the analytical expression of the gain of a FIR laser with a four-level system.
本文用缀饰原子方法解出四能级系统远红外激光增益系数的解析表达式。
The concept was to create a four-level diaphanous structure, which integrates all functions of living and working and yet offers enough privacy.
设计理念是创造出一个四层的透明体量，将所有的起居和办公功能都包含在一起，但同时为住户提供极大的隐私性。
Using our hierarchy, we can easily imagine a four-level process configuration for a large organization, as shown in Figure 2. Each layer contributes to the process above it.
用我们的层次，我能很容易就能够想象一个大的组织的四层过程结构，如图2所示。每一个层次会对它上面的过程有所帮助。
In fact, real benefit levels were lower in the 1970s than they were in the 1940s, and in most states the maximum benefit was below the poverty level for a family of four.
事实上，20世纪70年代的实际福利水平比20世纪40年代的要低，而且在大多数州，四口之家的最高福利都低于贫困线。
According to a study by Australian National University, Australian children and Chinese children have the same level of eyesight before they start school, but once they enter primary school, Chinese children only spend about an hour a day outside, while Australian children spend three to four hours each day in the sunshine.
澳大利亚国立大学的一项研究显示，澳大利亚的孩子和中国的孩子在入学前的视力水平相同。但是一旦他们进入小学，中国的孩子每天只会在户外度过一个小时，而澳大利亚的孩子每天在阳光下待三到四个小时。
During the past years, the city has suffered more extreme weather, missed rain during the normal wet season and seen a temperature hike almost four times higher than the global level.
过去几年期间，上海承受了更多的极端天气，正常的雨季却没有雨以及经历了几乎比全球水平高四倍之多的温度上升。
At a high level, an ESB has four major functions.
概括地讲，ESB具有四个主要功能。
You should then review the first four articles in this series, cited previously, which cover component design from a high level.
然后应当查阅先前引用过的本系列的前四篇文章，这几篇文章介绍了高级组件设计。
Moreover, shares of companies listed both there and in Hong Kong now trade at the same price level, on average. For the past four years Shanghai's typically fetched a noticeable premium.
另外，同时在上海和香港股市上市的股票目前平均以相同价格交易，而在过去四年中，在上海证交所交易的股票通常溢价较高。
On Friday officials raised the alert level at the plant from four to five on a seven-point international scale of atomic incidents.
周五，官方将本次事件的警报级别从四级提高到五级，而核事故的国际标准仅有七级。
To meet the UKBA requirement of a B2 level, students should achieve a minimum PTE Academic score of 51 across all four skills.
对于满足UKBA的B2语言水平的要求，学生至少需要获得PTE学术英语考试51分的成绩，包括听说读写四项技能分。
During his visit, Wolfowitz will meet leaders from many sectors within each of the four countries – at a political and local level.
沃尔福威茨在访问期间，将会见非洲四国，包括政界和地方的各界领导人。
The entry level point for that car will be a 1.8 liter four-cylinder turbo.
那部车的入门级点将是一个1.8升四缸涡轮增压。
Studies show that drivers who talk on cellphones are four times more likely to be in a crash and drive just as erratically as people with an 0.08 percent blood-alcohol level.
研究显示，使用手机谈话的司机发生事故的可能性高出四倍，其驾驶的无规则性与血液酒精水平的人们相当。
The four-week average of claims, a less-volatile measure, dropped for the fifth straight week to 458,000, the lowest level in two months.
该项数据今年一直在45万左右波动。 四周平均申领人数为45.8万，连续五周下跌，达到近两个月的最低水平。
By default, our filters had been set to a vigilance level of four on a 1-to-5 setting, with five being the most exclusionary.
我们的过滤器在默认状态下设定在了1 -5级的警戒级别，也就是4级，而5级是最具排他性的。
All four of the newly announced servers-the Power 750, Power 755, Power 770 and Power 780-take workload optimization to a new level.
新发布的四种服务器(Power 750、Power 755、Power 770和Power 780)都把工作负载优化提高到了新的水平。
Men represent barely a quarter of teachers, which the association says is the lowest level in four decades.
其中男性教师仅占教师总人数的四分之一，是最近40年来的最低水平。
Let's take a look at the next four maturity levels, their definitions and to what extent Relational software tools can be used to achieve higher level maturity.
让我们看看接下来的四个成熟度等级，它们的定义，以及Rational软件工具在实现更高等级的成熟度上能达到什么程度。
Teens reported screen time and their level of physical activity four times per year or a total of 20 times during the five-year study.
在为期五年的调查过程中，这些青少年汇报了他们在屏幕前的时间以及体育锻炼的程度，每年4次，总共为20次。
Figure 1 shows four high-level components, each with its own web service interface, that comprises a Eucalyptus installation
图1 中显示了四个高级组件，每个都有自己的web服务接口，其中包含 Eucalyptus 安装
As nervousness spread, the main Greek share index hit its lowest level since March 1998; the euro sank to a four-year low against the dollar. See article.
随着恐惧的蔓延，希腊的主要股指降到自1998年3月以来的最低水平；欧元对美元汇率也创4年来新低。
As nervousness spread, the main Greek share index hit its lowest level since March 1998; the euro sank to a four-year low against the dollar. See article.
随着恐惧的蔓延，希腊的主要股指降到自1998年3月以来的最低水平；欧元对美元汇率也创4年来新低。
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