Rosemount transmitter is a kind of general pressure transmitter. It is manufactured according to the law of electromagnetic induction and JB/T9248-1999 standard. It is used to measure the volume flow of conductive liquid in pipes, such as water, sewage, mud, mineral slurry, acid, alkali, salt liquid and food slurry.
http://www.wektransmitter.com/honeywell/

A thermostat is an instrument allowing the temperature to be maintained within given limits by the use of a device which cuts off the supply of heat when the required temperature is exceeded and automatically restores the supply when the temperature falls below that required.
http://www.rulethermostat.com/thermostat/

Car seat is a portable seat for an infant or a small child that attaches to an automobile seat and holds the child safely.
http://www.mingao-cn.com/car-s....eat-accessories/car-

Hollow section is a type of metal profile. They are commonly made from cold-rolled steel and formed into a hollow, tubular section. This profile creates a gaping unfilled edge that extends throughout the whole steel bar, which is what gives them the alternative names of "box section" and "hollow section."
http://www.lefinsteel.net/steel-pipe/ssaw-pipe/

A big trampoline is a device consisting of a piece of taut, strong fabric stretched between a steel frame using many coiled springs. Not all trampolines have springs, as the springfree trampoline uses glass-reinforced plastic rods. People bounce on trampolines for recreational and competitive purposes.
http://www.junpusports.com/trampoline/