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2020-03-19

ʵذ

2004꣬RobertX.ChambersUS.PatentB2ľذṹ·ͨíƬγһC͵ǻǿľذյһȶԡSPORTCOURTʼDankotherзʽƴװľذ壬ṹϵõ˹ϻᣨFIBAëϻᣨIBFȹ֤֯зƴװľذѱNBAְҵձӦãְҵϼ߹ۿзʵ˶ذǽṹϵͳȻ۽ϸߣܺͼָ궼ܸߣʺרҵݡйϼ߹ۿҵӦ͹ʽѧϰϼ߹ۿǰƺװա

ʵذ

ۣȫ赸ҵذ壬ʵԭĶϤֲˮԽϵͣʹùУҪר˶άɱ̨ľذڳʹ֮£ֵذ帯ʴDZε󡣾ϤĿǰ̨ľذĦֵݣԴﵽ0.4-0.6֮䣬沢Ϊذܣ̫ҲΪ㣬̫ɬȲ״෴ʹùУԸ̨ľذܣټ̨ľذ屾ṹԣӶУЧˤˡ֮⣬ʹ̨ľذʱҪע棬һЩԽΪӲƷлĦ

ʵذ

ʵذ塢ʵɵذʵϵذҪľˮľľɽë鷵ȡŷ˶ľذ幤ʦΪҿľʵذұGB/T202392006ӦGB/T15036.1~2001б1һƷ涨aȡ200mmbΪ22mm24mmʵذ塢ʵɵذʵϵذҪľˮľľɽë鷵ȡŷ˶ľذ幤ʦΪҿľʵذұGB/T202392006ӦGB/T181032000б1һƷ涨a)ȡ900mmȡ90mmb)Ϊ12mm~30mmc)ȡ4mm

ʵذ

ŷ˶ľذвƷͨDIN׼ԡŷ˶ľذ峤Ͱװľذ塢ëľذ塢ľذ塢ƹľذ塢ľذ塢ľذ塢ѵľذ塢ľذ塢ľذ塢Ժ̨ľذȣŷ˶ľذΪͻṩһվʽ˶ľذֱרҵװӭѯ졣С˶ôС˶ƹ˶кܴͬС˶еô򣬾кܴͬŷ˶ľذ幤ʦΪǿգǻɻ򣬵ʱ뿪ԱʱʱԱɴʱУԱɴʱ

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