11. The 1348th Base Unit control tower performed all air traffic control of aircraft to and from China. 12. The classifier in the unit controls the particle size within the range between 30-325 Mesh ( scale ). 13. A set of vehicles under multiple unit control is referred to as a consist in the United States. 14. On to the unit control system. 15. Each unit controls Opium Divisions and Preventive and Intelligence Cells for the supervision of cultivation and effective preventive work. 16. Main changes introduced were an improved secondary suspension, multiple unit control and several small modernisations, like automatic door control. 17. At a later stage, the retention of the step controllers enabled them also to be fitted with multiple unit control . 18. Much use is made of the ABe 4 / 4 III s'multiple unit control systems in the Bernina Railway's daily operations. 19. It has been reported that the 280hp units had provision for multiple unit control , but that this feature was never utilised. 20. R711 entered service on regular trains on 21 November 1998 and was fitted with multiple unit control equipment for diesel electric locomotives.
