Metal chisels , punches , and drift pins : safety requirements 金属凿凿孔机和冲钉:安全要求
Hand tools - metal punches and drift pins - safety requirements 手工工具.金属冲头和尖冲钉.安全要求
Metal chisels , punches , and drift pins 金属凿冲床和冲钉
In joist ' s temporary fixation , if temporary bolt and drill nail are used , amount of them should be calculated as flowed specification : the amount should be no less than 1 / 3 of all holes ; at least , two temporary bolts should be used ; amount of drill nail should be no more than 30 % of temporary bolts bolted ( grade a , grade b ) hole shouldn ' t be fixed with drill nail 桁架临时固定如需用临时螺栓和冲钉,则每个节点处应穿入的数量必须由计算确定,并应符合下列规定:不得少于安装孔总数的1 / 3 ;至少应穿两个临时螺栓;冲钉穿入数量不宜多于临时螺栓的30 % ;扩钻后的螺栓( a级、 b级)的孔不得使用冲钉。
冲: powerful; with vim and vigou ...钉: nail; tack冲钉器: nail punch; nail set尖冲钉: drift pin冲钉机;钉形冲头: nail punch尖冲钉 冲头 冲子 紧配合销: driftpin冲调用可可粉: soluble cocoa冲调;复水: recombination冲顶褶皱: diapir fold冲吊战术: long ball冲动: 1.(能引起某种动作的神经兴奋) impulse; impulsion; impulse of motion 出于一时冲动 act on impulse; follow a sudden impulse; act on rash impluse2.(情感强烈、理性控制很弱的心理现象) get excited; be impetuous 他很容易冲动。 he easily gets excited. 我不知道怎样抑制自己的感情冲动。 i don't know how to resist my impulse.3.[机械工程] (冲击推动) impulse; 冲动发放 incitogram (组织和发动传出冲动的神经状态); 冲动级 impulse type stage; 冲动行为 impulsive action; 冲动作用 impulse action 冲掉芯料: punch-out冲动,猛烈的: impetuous冲掉改写: overwrite