冲击 1.(水流等撞击) lash; pound 激流对海岸的冲击 the impact of the swift current against the shore; 海浪冲击着礁石, 飞起像珠子般的水花。 the wave lashed against the rocks, sending up pearly spray.2.(迅猛攻击) charge; assault; dash; flewit 对社会道德观念的冲击 a shock to the sense of a community; 向敌人阵地发起冲击 charge an enemy position3.[力学] shock4.[物理学] ballistic5.[医学] ictus6.[电学] surge7.[机械工程] impact; impigement
应力 [物理学] stress; strain; tension; charge 内应力 internal stress; 预应力 prestress; 正应力 direct stress; 冲击应力 impact stress; 交变应力 alternate stress; 工程师们计算桥梁的应变和应力。 engineers calculate the strains and stresses on a bridge
Stress analysis and fatigue life prediction of hammer rod 锤杆冲击应力分析与疲劳寿命估算
Force of 355 . 09kpa was produced by a 30g weight dropped from 25cm height 本实验选用叨击锤从25cm高处下落,冲击应力d为355
Analysis and calculating to impacting stress and stroke of the impacting hammer in the striking of a pile hammer 桩锤撞击过程中冲击应力及夯锤工作行程的分析与计算
Plastics piping and ducting systems . thermoplastics pipes . determination of resistance to external blows by the staircase method 塑料管和防护管系统.热塑管.用梯级法测定抗外冲击应力的能力
Plastics piping and ducting systems - thermoplastics pipes - test method for resistance to external blows by the round - the - clock method 塑料管道和导管系统.热塑管.抗日夜外部连续冲击应力的试验方法
Railway rolling stock . behaviour of rolling stock ' s seats at statics stress , fatigue stress , vibrations stress and shocks stress 铁路车辆.在静态应力疲劳应力振动应力和冲击应力下铁路车辆座位的特性
Abstract : impact stress and impact shift are solved by energy method . stress - strength interference model can be used to impact investigation . reliability design of impact has been studied 文摘:用能量法求冲击应力和冲击变形.并将应力强度干涉模型运用于冲击问题,讨论了冲击的可靠性设计
In the present experiment studies , an acute traumatic model of lateral cortical impact was employed to study expressive changes of microtubule associated protein - 2 ( map - 2 ) , cyclooxygenase - 2 ( cox - 2 ) , glial cell line - derived neurotrophic factor ( gdnf ) , caspase - 3 mrna and protein after brain injury in rats . immunocytochemical staining , western blotting , nucleic acid in situ hybridization with an oligonucleotide probe and computer image analysis were used to detect the dynamic changes of map - 2 mrna , cox - 2 mrna , gdnf mrna , and caspase - 3 mrna in the cortex after moderate traumatic brain injury ( tbi ) 本实验从自行设计大鼠脑损伤落体打击器开始,先行建立了一个便于观察和施加处理因素、控制性好、重复性好的动物模型,选用30g击锤从25cm高处下落,冲击应力d为355 . 09kpa ,打击大鼠右顶部,造成中等程度的闭合性脑损伤,从病理形态学、组织超微结构观察及微管相关蛋白- 2 ( microtubuleassociatedprotein2 , map - 2 ) 、环氧合酶- 2 ( cyclooxygenase2 , cox - 2 ) 、胶质源性神经营养因子( glialcellline - derivedneutrophicfactor , gdnf ) 、 caspase - 3基因及蛋白表达的时间性变化,详尽系统地阐述脑损伤后各指标变化的时间规律性及表达差异可能的形成机制。