A way of promoting fracture healing and the ultrasonic wave generating ultrasonic therapeutic apparatus, comprising: an ultrasonic therapeutic apparatus main body and the work head body includes an ultrasonic therapeutic apparatus for generating a coded sequence of the coding sequence of the transmi.....
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The invention discloses a catalytic asymmetric hydrogenation reaction. Of the present invention is the role of chiral catalyst, H2 of the prochiral unsaturated compounds to addition reaction to obtain the chiral product, wherein the solvent used in the reaction liquid polyethylene glycol compound. T.....
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The invention relates to a sheet-type micro refrigerator applying a lead-free ferroelectric material. The micro refrigerator comprises a multi-layer structure which is composed of a ferroelectric dialectric layer and a metal electrode layer alternatively; the ferroelectric dielectric layer is made o.....
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