Oversættelse af Tekniske Tekster - OpenArchive@CBS

Direktive tekster
The laser is basically a light source. The radiation that it emits is not
fundamentally different from any other form of electromagnetic radiation. The
nature of the device, however, is such that some remarkable properties of light
are realized. These unique properties, taken as a whole, are not available from
any other light source to the extent that they are obtained from a laser. The
unique properties referred to are the following:
1. High monochromaticity (small wavelength spread)
2. High degree of both spatial and temporal coherence (strong correlation
in phase)
3. High brightness (primarily due to small beam divergence)
4. Capability of very low (microwatts) to very high (kilowatts) continuous
power output for different types of lasers
5. High peak power (terrawatts) and large energy (hundreds of joules) per
pulse in pulsed output lasers
6. Capability of being focused to a small diffraction-limited spot size (on
the order of the wavelength of the light)
(Luxon, James T. & David E. Parker (1992). Industrial Lasers and Their
Applications, second edition, Prentice Hall)
Denne gruppe omfatter instruktioner af enhver art, eksempelvis brugsanvisninger,
betjeningsvejledninger og betjeningsforskrifter. Mange instruktionshæfter og manualer vil
typisk veksle mellem deskriptive og direktive passager. På engelsk gør denne teksttype
udstrakt brug af imperativ, der synes at smitte af på tilsvarende danske tekster. I tidens løb er
der nok kommet flere imperativer på dansk, fx i kogebøger: ’tilsæt salt’, ’krydr stegen’.
Jump-Starting Procedure
Listed below are typical steps in a jump-starting procedure.
1. Move the vehicle with the charged battery close to the vehicle with the dead
battery. Do not allow the vehicles to touch each other.
2. Check that the jumper cables are long enough to reach from battery to battery.
Do not allow the jumper-cable clamps to touch the terminals on either battery at
this time.
3. Cover the caps of a vent-cap battery with a damp cloth.
4. Set parking brakes in both vehicles. The transmissions or transaxles in both
vehicles should be in 'park' (automatic) or 'neutral' (manual).
5. Turn off all lights, switches, and electrical equipment. This helps prevent
voltage surges from damaging the vehicle computers.
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