(objet round) ball. une boule de cristal a crystal ball. roulÃ© en boule curled up in a ball. (pour jouer) bowl. jouer aux boules to play bowls. * se mettre en boule to fly off the handle, to blow one's top. perdre la boule to go off one's rocker *. boule de gomme. nf (=bonbon) gum.
Communications security is the discipline of preventing unauthorized interceptors from accessing telecommunications in an intelligible form, while still delivering content to the intended recipients. In the United States Department of Defense culture, it is often referred to by the abbreviation COMSEC. The field includes cryptographic security, transmission security, emissions security and physical security of COMSEC equipment and associated keying material. COMSEC is used to protect both classified and unclassified traffic on military communications networks, including voice, video, and data.
Also known as: Perchloroethylene, Perc, PCE, PerSec, Tetranec. Chemical reference number (CAS): 127-18- 4. Tetrachloroethylene (PCE) is a nonflammable, liquid solvent widely used in dry cleaning, wood processing, fabric manufacturing, and metal degreasing.In homes, it may be found in suede protectors, paint removers, furniture stripper, water repellents, silicone lubricants, spot removers, glues, and wood cleaners.nformation. People are most often exposed to PCE when they use it in their work, when cleaning or doing hobbies. Breathing: PCE evaporates into the air. People are commonly exposed to PCE by breathing air containing its vapors. PCE can contaminate home air when people use cleaning solvents or other products.