查询词典 concentric circle

Besides the bull's-eye, the target is comprised of nine concentric rings, and the outer ring is worth one point.

靶除了靶心外，还有9个同心圆。射中最外面的一圈得1分。

In this engine the shaft and piston barrel are concentric, while the walls of the steam chambers are ovoid.

" "在这个发动机轴和活塞桶是同心，而墙的蒸汽分庭卵形。

The rod and the piston bore are not concentric.

活塞杆和活塞腔不同心。

A head and platter can be visualized as being similar to a record and playback head on an old phonograph, except the data structure of a hard disk is arranged into concentric circles instead of in a spiral as it on a phonograph record.

可以看到磁头和盘片和老式留声机上纪录和回访头相似，不同的是硬盘的数据一系列的同心圆而不是老式留声机上的螺旋结构。

Methods Six normal volunteers were examined with 1.5 T MRI scanner, and stimulated with the pattern of phase-encoded polar angle with clockwise or counterclockwise rotating wedges, and the pattern of eccentricity with concentric expanding or contracting rings.

方法采用1.5T超导MR设备，运用2种具有相位编码信息的投影刺激：离心外散和向心内聚的光环刺激，以及顺时针和逆时针方向旋转的极角刺激，对6名正常人进行血氧水平依赖的fMRI。

Volleyball concentric with dual raceway in the same direction and bear the load of one-way thrust ball bearings.

具有双排球的同心滚道且承受相同方向负荷的单向推力球轴承。

The Luneburg lens antenna is composed of a series of concentric shells of constant permittivity. Considering the complexity of numerical calculation, this paper presents a closed-form approach, which combines the spherical vector wave method and the reciprocity theorem.

摘要伦伯透镜是一种球形分层介质天线，考虑到数值计算的复杂性，本文提出用矢量球面波理论和互易原理相结合，分析其性能。

In the paper, 3D temperature and fluid flow fields were numerically simulated in three-split concentric tube recuperator with longitudinal fins on conjugated heat transfer.

数值模拟了变物性带均布纵肋的同心套管换热芯的导热和对流换热耦合问题三维温度场和流场以及Nu数，与常物性下的结果进行了对比。

The main products include SP Scart Socket,SJ6.35Phone Jack,AV Concentric Socket,WP Wire Clamp,S Video Terminal, Earphong Jack,Switches and Automobile Electric Appliances.

主要产品有SP XLR 卡侬插座、SJ6.35话筒插座、AV同芯插座、WP线夹、S视频端子、耳机插座、开关、汽车电器系列。

Cupules covered with squamose or scurfy bracts and with raised concentric ridges outside.

壳斗为具鳞片或者皮屑似的苞所覆盖，并且与提高的同心的脊在外面。

This paper designs the communication system of radio telescope FAST.

针对500m口径球面射电望远镜FAST分布式控制系统的特点完成了其通信系统的设计。

Political sheep's step-by-step a large number of fossils unearthed in the county soil Ma Ali after rural village in the middle of sallow pelitic siltstone.

步氏和政羊化石大量出土于广河县阿力麻土乡后山村，产于灰黄色泥质粉砂岩中。