The two types of cased hole testing are pressure operated and mechanically operated.
2.
This suction pressure operates to cause suction pressure collapse on the duct side walls.
3.
Sure, there are still selection pressures operating on humanity.
4.
The free play in this emergency mechanical system is necessary for the normal play free pressure operated Diravi system to operate its feedback control loop.
5.
Also this pressure operates perpendicular to the duct " expansion joints " to create an additional load on the duct supports that adds to dead, and live loads.
6.
In spite of continued price pressure operating margins reached 9.0 percent in the first half compared to 8.5 percent in the first half of 1994, and 8.8 percent at the end of last year.
7.
In spite of continued price pressure operating margins reached 9 . 0 percent in the first half compared to 8 . 5 percent in the first half of 1994, and 8 . 8 percent at the end of last year.
8.
It could be fitted with AEC's 9.6-litre diesel engine ( except a minority with 7.7-litre ones ),'Wilson'preselective epicyclic gearbox ( except for a minority with crash gearboxes; a synchromesh option also became available in the early 1950s ) and air-pressure operated brakes ( except a minority with vacuum brakes ).
9.
The system features an oil pressure operated device attached to the back of the standard gearbox operating on the gearbox output shaft . Through a system of oil pressure, solenoids and pistons, the overdrive would drop the revs on whatever gears it was used on by 22 % ( . 778 ).
10.
The new engine was 782cc and was equipped with pressure operated variable exhaust port timing valves, or ( Rotax Automatic Variable Exhaust ) R . A . V . E . valves, dual carburetors, and a tuned, variable water injected expansion chamber, which helped the XP 800 reach speeds of 59 mph.
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