Ring-loop line is a new slow-wave structure,comparing with helix it has some particular characteristics,such as high coupled-impedance,low backward wave,good phase characteristics etc.
环圈慢波线是新型的慢波结构,与螺旋线慢波线相比,环圈慢波线有基波耦合阻抗大、返波分量小、相位特性好等独特的优点,本文介绍了采用环圈慢波结构的C波段脉冲行波管的研制过程。
a loop knot that neither slips not jams.
滑动或堵塞的环圈结。
Moreover, the flare had a simple loop structure.
此外，日焰有著简单的环圈结构。
electrode (retaining) collar
电极圈［环］，电极夹持环
To twist(the hair, for example) into ringlets or coils.
卷成小圈把(头发等)卷曲成小环或小圈
"curl:To twist (the hair, for example) into ringlets or coils."
卷成小圈:把(头发等)卷曲成小环或小圈.
a ring of iron or circle of rope used in the game of quoits.
执圈游戏中使用的铁环或绳圈。
The ring sum of two circs is a circ.
两个广义圈的环和是一个广义圈。
piston pin snap ring
活塞销锁圈, 活塞销扣环
cromflex oil (piston) ring
钢制带胀圈的(活塞)环
reinforced shotcrete ring
钢筋喷浆混凝土环[圈]
ring with coil-spring expander
螺旋弹簧胀圈活塞环
bearing with locating snap ring groove
外圈有止动环槽轴承
Hoop skirts were once the vogue.
圈环裙一度曾是时尚
A garland, wreath, or circlet for the head.
环形花环戴在头上的花环、叶冠或圈
A toroid generated by a circle;a surface having the shape of a doughnut.
环面，环形圆纹曲面圆圈形成的超环面；具有炸面圈一样形状的表面
The living organisms and their environment composing the biosphere.
生物圈组成生物圈的生物及其环境的总和
A representation of this ring or circlet, as in woodwork.
花圈象征物环形或圈形的象征物，如木制品
The street plan of the city has evolved as a series of concentric rings.
该城市的街道平面图像一圈圈的同心圆环。