公称用英语怎么说

公称的英文：
nominal

Lever-lock handles are not recommended for use on 8"" and larger valves.
建议不要在公称通径大于8英寸的阀门上使用杠杆固定锁手柄。

"Specify valve size, figure number and length to be added to existing stem length (dimension a)."
请说明阀门的公称通径、型号和加在现有阀杆上的长度(尺寸"a")。

"Butterfly Valves 2""-12"" shall be of the flangeless type, both lug and wafer styles."
2至12英寸公称通径的蝶阀是无法兰类型,但都有平板型和吊耳型两种类型。

nominal addendum
标称齿顶高

He is nominated as police chief.
他被任命为警察局局长。

The charge of the box lunch was nominal.
午餐饭盒收费很少。

Let‘s nominate a date for the race.
我们给比赛定个日期吧。

He could not realize their nominal closeness.
他没法儿想得出来，他们名义上那样近的关系会是真事。