Abstract: A hair straightening device comprises: a hand-held part, a first outlet member, a second outlet member. The second outlet member is arranged parallel to the first outlet member, the first outlet member and the second outlet member are respectively connected with the hand-held part, and a working space is defined between the first outlet member and the second outlet member; wherein at least one of the first outlet member and the second outlet member includes an air chamber and an air outlet communicated with the air chamber, the air outlet is extended along the length of the outlet member; wherein wall of the working space close to the air outlet includes a guiding bevel, the guiding bevel is configured for guiding airflow in the air chamber to the working space; wherein the air outlet is provided with a plurality of deflectors spaced along the direction of the outlet member.

Abstract: The present disclosure provides a group training action correction system and method combining face and gesture recognition, wherein the system includes an individual action correction moment determination module, which is configured to determine a nearest individual action correction moment after a current training progress on a preset training progress axis; and an individual action correction module, which is configured to correct and prompt individually action for the action correction object based on a standard gesture, an action to be corrected, and a personnel identity when entering the individual correction moment.

Abstract: The present disclosure relates to the technical fields of agriculture and environmental microbiology, and provides Agrobacterium for reducing uptake of heavy metals by wheat. The Agrobacterium is strain NJ20, which is deposited in China General Microbiological Culture Collection Center under Accession CGMCC No. 26197. The present disclosure also provides a bacterial agent which is prepared by the aforementioned Agrobacterium. The Agrobacterium and bacterial agent thereof are used for reducing uptake of heavy metals in heavy metal contaminated soil by wheat. The strain NJ20 of the present disclosure can grow well under the stress of lead and cadmium, and remove soluble lead and cadmium in the culture solution by adsorption; meanwhile the strain NJ20 can generate indoleacetic acid, dissolve insoluble tricalcium phosphate and improve phosphorus nutrition in soil. Inoculation of the strain NJ20 into heavy metal contaminated soil can reduce the contents of lead and cadmium in wheat grains and straws.