Metal-oxide material generates electromechanical stress an order of magnitude above existing materials.The ability to develop a mechanical stress in response to the application of an external electric field has many uses, and characteristic materials are classified as either piezoelectric or electro.....
[更多]
(9) magnetic, optical and other data media, information, sound, pictorial and sound-pictorial records belonging to class 9, publications in an electronic form, electronic magazine, electronic information bulletin, on-line accessible publication in the Internet net, software on media; (16) paper and .....
[更多]
Waste management > Pollution control
[更多]
Miniature autonomous startracker for micro and nanosatellines.
[更多]
|< <- | [180] [181] [182] [183] [184] [185] [186] [187] [188] [189] [190] | -> >| |