环状的

In the third type, the double-ring cloud wall is formed as a result of the development of cumulus convection inner region of typhoon into a well-closed inner cloud wall. The inner wall usually lasts for a period of time and then rapidly disappears.

还有一类双环云墙的形成是由台风眼内积云对流发展而演变为环状闭合内云墙的，这类台风的内云墙维持一段时间后即消散。

A seat all around the shelter will let you hang around with your friends although we don't see too many students gathering around a waste bin.

所设的一个环状座位将让您与您的朋友自由围坐，尽管，并没有看到太多的学生相聚在废纸箱周围。

D: I know, but scientists at UCLA and Tennessee State University noticed a strange ring of debris and dust orbiting a star.

丹：我知道，但是加州大学洛杉矶分校和田纳西州立大学的科学家注意到了碎片和灰尘环绕行星形成的一种奇怪的环状。

The device includes a drill spigot inserting into the marebase sand layer through the upper cover soil layer, there sets air inlet, sand discharging pipe and vibration connecting pipe in the drill spigot; there sets a sand absorption head on the bottom of the air inlet and sand discharging pipe; the bottom of the vibration connecting pipe connects with the vibration head; the sand absorption head is made up of a centre cavity, ring cavity and sand absorption pipe.

该装置包括一穿透上部覆盖土层插入到海底深埋砂土层的钻孔套管，在钻孔套管内，设有进气管、排砂管和振动连接管；进气管和排砂管的下端连接一个吸砂头；振动连接管的下端连接振动头；吸砂头由一中心腔室、环状腔体和吸砂管构成。

Ring appears armature electro-acoustic transducer, abandoned plane ferromagnetic disk Diaphragm Park, began to use his ring on the armature and the bonding of non-ferrous magnetic Park tapered at the end of radiator to lower the quality of the sound output pressure to increase by 5 decibels, to extend the frequency range of about 500Hz, the successful design, moving iron type electro-acoustic transducer to achieve the ultimate performance.

1950年出现的环型衔铁电声换能器，摒弃了铁磁性平面园盘振膜，开始采用环状衔铁和粘接其上的非铁磁性园锥形辐射体来降底质量，使输出声压提高了5分贝，频率范围扩展了约500Hz，这一成功设计使动铁式电声换能器的性能达到了极致。

AIM: To establish a simple and fast hepatitis B virus covalently closed circular DNA detecting method based on polymerase chain reaction with satisfactory sensitivity and specificity.

摘要目的：建立一种基于聚合酶链反应的简便快速、具有较高敏感性和特异性的检测乙型肝炎病毒共价闭合环状DNA的方法。

The amount of covalently closed circular DNA in the serum is reported to be higher in patients who develop YMDD mutants than in those without mutants.

据报道，血清中共价闭合环状DNA的水平在发生YMDD变异的病人中要比不发生变异的病人高。

A small, raccoonlike mammal of northeast Asia, having reddish fur, white face markings, and a long ringed tail. Also called lesser panda , red panda

小熊猫：产于亚洲东北的一种长得象浣熊的小型哺乳动物，有赤褐色毛，脸带白斑，有长的环状尾巴也作 lesser panda ， red panda

Prominences are huge loops of filaments of gas extending into the solar atmosphere; some last for hours, others for months.

日珥则是巨大的环状气体呈细丝形地延伸至太阳的大气层。一些日珥持续时间为几小时，其他的则为数月之久。

Atechnique of low-profile fixation using obliquely oriented screws from the radial head into the shaft has been developed to avoid distal dissection of the soft tissues and placement of hardware in an already-constrained area adjacent to the annular ligament and lateral ligamentous structures.

一种使用螺钉于桡骨头向桡骨干斜向固定的隐蔽固定技术已经出现，该技术可避免于桡骨环状韧带和侧副韧带结构四周本以紧张的部位切除远端的软组织和放置刚性植入物。

It has been put forward that there exists single Ball point and double Ball points on the symmetrical connecting-rod curves of equilateral mechanisms.

从鲍尔点的形成原理出发，分析对称连杆曲线上鲍尔点的产生条件，提出等边机构的对称连杆曲线上有单鲍尔点和双鲍尔点。

The factory affiliated to the Group primarily manufactures multiple-purpose pincers, baking kits, knives, scissors, kitchenware, gardening tools and beauty care kits as well as other hardware tools, the annual production value of which reaches US$ 30 million dollars.

集团所属工厂主要生产多用钳、烤具、刀具、剪刀、厨具、花园工具、美容套等五金产品，年生产总值3000万美元，产品价廉物美、选料上乘、质量保证，深受国内外客户的青睐