HP TextEngineer Technical Writing Guide Manuale Utente Scaricare il pdf (Pagina 19)

Company Writer's Guide

[For Illustration Only] B-4

Symbols for Units in General Use

Unit Symbol Notes

ampere A SI unit of electric current.

ampere (turn) A SI unit of magnetomotive force.

ampere-hour Ah Also A•h

ampere per meter A/m SI unit of magnetic field strength.

angstrom

1 Δ = 10

-10

m (deprecated, see ANSI Z210.1-1976)

atmosphere, standard atm

1 atm = 101 325 Pa (deprecated, see ANSI Z210.1-

1976)

atmosphere, technical at

1 at = 1 kgf/cm

(deprecated,

see ANSI Z210.1-1976)

atomic mass unit (unified) u

The (unified) atomic mass unit is defined as one

twelfth of the mass of an atom of the

C nuclide.

Use of the old atomic mass (amu), defined by

reference to oxygen, is deprecated.

atto a SI prefix for 10

-18

attoampere aA

bar bar

1 bar = 100 kPa. Use of the bar is strongly

discouraged (see ANSI Z210.1-1976), except for

limited use in meteorology.

barn b 1 b = 10

-28

barrel bbl 1 bbl = 42 gal

= 158.99 L

barrel per day bbl/d

This is the standard barrel used for petroleum,

etc. A different standard barrel is used for fruits,

vegetables, and dry commodities.

baud Bd

In telecommunications, a unit of signaling speed

equal to one element per second. The signaling

speed in bauds is equal to the reciprocal of the

signal element length in seconds.

1 2 ... 14 15 16 17 18 19 20 21 22 23 24 ... 31 32

Commenti su questo manuale

Nessun commento

HP TextEngineer Technical Writing Guide Manuale Utente Pagina 19

Commenti su questo manuale

Prodotti e manuali riguardandi no HP TextEngineer Technical Writing Guide