环形

A mathematical model was established for this kind of laser resonators.

建立数学模型，模拟计算使用倒向波抑制镜对环形非稳腔的影响。

Becausethe number of REDEs in the same or neighboring region is notmany, the loop competition becomes oligopoly.

由于同一或相邻区域的开发商不多，从而环形竞争的开发商形成了寡占。

Here care must be taken after heavy rainfalls.

但是大雨之后这条环形山路十分难走。

Two important parameters–balance radiuses and space charge force balance radius is calculated under neutral plasma case.

求解了环形束内不同等离子体分布情况下电子束在等离子体中的包络轨迹。

Three-dimensional (3D) structures of CNTs were firstly synthesized, including pillar-shaped arrays, a ring-like castle and a crucian carp without a tail and fins made of nanotubes.

首次制备了三维碳纳米管阵列，如三维柱状结构、类似环形城堡状和鱼形的图案。

Based on the theory of matrix optics,temperature effect of Ring Laser with the Total Reflection Prisms is studied.

根据矩阵光学理论，研究了全反射棱镜式环形激光器光路的温度效应。

Institute of Environmental Heath Monitoring, Chinese Academy of Preve ntive Medicine, Beijing 100021,China

单位：吴亚西（中国预防医学科学院环境卫生监测所，北京 100021）关键词：环形扩散管；离子色谱；污染空气

A gas-air premixing burner for gas turbines includes an air swirler and an annular burner tube surrounding a bluff centerbody.

一种用于燃气轮机的燃气-空气预混合燃烧器，包括空气旋流器(114)和围绕非流线型中心体的环形燃烧管。

These are probably the evidence that the meteorite impacted the earth and then created high temperature to splash the lava. Since no other volcano lava or pozzolana are found nearby, so we may exclude the possibility that ringed mountains are volcano craters.

它们可能是陨石撞击地壳高温致熔岩飞溅的证物；而由于相关地带没有发现火山熔岩或火山灰分布，可以排除环形山是火山口的可能。

From the results, we presume the Lunar interior solidified 3 billion years ago, massive planetoids' strike caused the unevenly distribution of metallic elements, made the metallic abundance in the surface of Lunar highland lower than Lunar mare generally, and lead to the formation of craters on the Lunar surface.

由此推测30亿年前月球内部逐渐固化，大量小行星对月表岩石频繁的撞击导致金属元素分布不均衡，使金属元素在月球高原地带普遍含量低于月海，同时也形成了现在我们看到的遍布月表的环形山。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。