1.
a circular ring of metal for holding keys.
一个用来穿钥匙的圆形金属环。
2.
Oval metallic ring gaskets for steel pipe flange joints
GB/T9128.2-1988钢制管法兰连接用椭圆形金属环垫
3.
a circular band used to hold a particular person's napkin.
一个用来套住某人餐巾的圆形金属小环。
4.
Capacitors with disc metal enclosure for electronic equipments--Outline dimensions series
GB/T2474-1981电子设备用圆形金属外壳电容器外形尺寸系列
5.
a usually cylindrical metal container.
金属制的圆柱形容器.
6.
The metal, cylindrical part of a firearm through which the bullet travels.
枪管枪的圆柱形金属部分，供子弹穿过
7.
a cylindrical metal lining used to reduce friction.
减少摩擦的一种圆柱形金属衬套。
8.
a metal piece (usually a disc) used as money.
一枚金属钱币（通常呈圆形）。
9.
hollow section guide roller
空心导布辊（由中空的圆柱形金属管制成）
10.
Stress Analysis and Strength Design for the Bottom Node of Cylindrical Metal Tanks
圆柱形金属油罐下节点的应力分析和强度设计
11.
Metal Materials and Its Welding Technology for Cylindrical Pressure Vessels Using for Pulping
圆筒形蒸煮压力容器金属材料及焊接技术
12.
the machine punched out metal circles.
机器冲压出金属圆盘。
13.
Baculites ovatus fauna
杆菊石属卵圆形动物群
14.
Hollow metallic waveguides-Part 4: Relevant specifications for circular waveguides
GB/T11450.4-1989空心金属波导第四部分:圆形波导有关规范
15.
These coins were round lumps of precious metal with their weight stamped on them.
这些硬币是由稀有金属制成的圆形块状物，上面印有其重量。
16.
a threaded hexagonal or square-headed bolt with a nut; tightened with a wrench; used to connect metal parts.
一种带有螺母的六角形或圆头螺纹螺丝；用扳手拉紧；用于连接金属。
17.
Metallic powder-Determination of green strength by compression of cylinder compacts
GB/T11106-1989金属粉末用圆柱形压坯的压缩测定压坯强度的方法
18.
Standard joint is a circular male and female configuration with a corrugated metal gasket.
标准连接是圆形外螺纹和内螺纹结构，配置波纹金属垫圈。