First,this dissertation research data collection system,at present,lots of residential area use electron meter and machine meter,so present the system frame drawing of collection module and collection terminal for electron meter and machine meter. Using AT89C2051 and RS-485,finish the design of collection module and draw the circuit diagram.
Through hundreds yearsof the watch making history, several complica-tion functions were made, of which received 'Six Masterpiece' in mechanicalpocket or wristwatch, they are:
Multi-users static Watt-hour meter is one kind of new Watt-hour meter,which character is small feature,precise accuracy class,high anti-interference,and every meter is equal to8~24single phase Watt-hour meter.
These contributions manifest themselves through the mechanism of strain-induced reversible transformations of a number of domains of the anisotropic amorphous phase into the crystalline state under the action of mechanical or electrical fields.
It is established that the powder grinding process and mechanical formation of an alloy from atomic components cannot be treated on a purely mechanical or mechanochemical basis.
Dynamics of the surface relief on a Si(111) single crystal face of a sample subjected to biaxial lateral extension after mechanical or chemical polishing was studied using scanning tunneling microscopy.
Cold spray is a technique to make a coating on a wide variety of mechanical or electric parts by spraying solid particles accelerated through a high-speed gas flow in a converging-diverging nozzle.
Acute intraabdominal diseases, sepsis, trauma, mechanical ventilation, drugs or lack of enteral feeding may lead to the clinical picture of mechanical or paralytic ileus or to complete gut failure.
This paper introduces an energy saving aeration system: hybrid aeration. system(HAS), which uses mechanical surface aeration near the inlet of aeration tank followed by fine bubble diffusion aeration.The KLa,O2 transfer efficiency were measured and so on of HAS in B.M.Wastewater Plant,England,gave it a positive evaluation.
Authors present the dimension expressions of special instrument circular arc gear, and propose a selective method of hob's rolling circle radius according as conjugate rack profiles existe or not. Then, according to the principle of tooth normal technique, authors propose a design method of hob's tooth profiles for special instrument circle arc gear, and deduced all formulae used to design hob's tooth profiles. Eventually, Authors take week\|calendar wheel used in woman's mechanical watch as an example, des...
A digital bench of fuel injector of marine diesel engine has been made by authors. Through the experiment on test-bed, the result shows that compared with mechanical or pneumatic one, the equipment has such many advantages, as the higher measurement precision, excellent dynamic property and auto-measurement as well as retention and so on. The equipment can extensively be used for checking fuel injector of marine diesel engines.