The invention provides a freeform lens, which comprises a body (1) with a substantially bowl-shaped structure formed by a transparent material; the bottom of the body sinks inwards to form a light source area (2) which can accommodate an LED; the surface, surrounding the light source area (2), of th.....
[更多]
The present invention relates to a preparation of shape memory polyurethane shape memory fiber and its preparation method, the shape memory polyurethane is a hydroxyl group-containing organic polymer material, a chain extender, a diisocyanate, blocking agent, the molar ratio of 1: 1-3:2.4-4.8:0.8-1......
[更多]
The utility model relates to an electronic device for detecting atherosclerosis. The device includes an ECG sensor for collecting ECG signals, an ECG amplifier connected with the ECG sensor for amplifying the ECG signals collected by the ECG amplifier, a voltage comparator connected with the ECG amp.....
[更多]
The present invention relates to a shape memory fiber and its preparation method, the shape memory fibers are made from a shape memory polyurethane, said polyurethane formed by the reversible phase component (A) to form a fixed phase component (B) prepared by . The shape memory fiber preparation met.....
[更多]
The present invention discloses one kind of functional electric stimulation system for rehabilitation of upper limbs of apoplexy patient. The functional electric stimulation system includes one arm support for supporting the upper limbs of the patient and with electrodes for electric stimulation; on.....
[更多]
| |< <- | [18] [19] [20] [21] [22] [23] [24] [25] [26] [27] [28] | -> >| |
