instruction:
Translate the given Spanish text to English
question:
Use of the stabiliser composition is described.
answer:
Se describe el uso de la composición estabilizadora.


question:
The shell has at least one outlet opening (11).
answer:
La carcasa tiene al menos una abertura de salida (11).


question:
A mechanism ensures that the beam sweeps across the entire lens.
answer:

Un mecanismo asegura que el haz barra toda la lente.