Adopted ofc oxygen free copper into lead terminals for improvement of tone quality 采用ofc無(wú)酸素銅引腳,改進(jìn)音質(zhì)
Role of oxygen free radicals in hypertension and cardiovascular remodeling of nitric oxide - deficient rats 3基因?qū)钦T導(dǎo)的高血壓及胰島素抵抗的調(diào)節(jié)作用
Oxygen free copper sheets , plates , strips , seamless pipes and tubes , rods , bars and wires for electron devices 電子設(shè)備用無(wú)氧銅薄片板材帶材無(wú)縫鋼管桿材棒材和線材
The study of the max capacity of oxygen uptake , aerating oxygen free domain and some reted physiological parameter of the long distance running juvenile athiete 少年長(zhǎng)跑運(yùn)動(dòng)員最大吸氧量通氣無(wú)氧閾及生理參數(shù)的觀察
( 3 ) according to the changes of water content , oxygen free radical content and surperoxide dismutase activity , seedlings of sorghum showed some adaptability to lower stress of salinity and alkalinity ( 3 )由地上部分含水量、氧自山基含量及sod活性變化可得,高粱幼苗在受較低水平的混合鹽堿脅迫時(shí)具有一定的適應(yīng)性。
In the present dissertation , five commercial metallic materials ? tungsten alloy ( 93w ) , oxygen free copper ( ofc ) , titanium alloy ( tc - t ) , pure aluminum ( al ) and magnesium alloy ( mb2 ) were chosen as the composite system of the flier - plate with graded wave impedance , and their acoustic and mechanical parameters were measured . the thickness of each material was controlled so that flier - plates with a parabolic or cubic wave impedance distribution were designed 依據(jù)實(shí)現(xiàn)準(zhǔn)等熵壓縮和超高速發(fā)射對(duì)梯度飛片體系的理論要求,論文首先在一個(gè)較寬的波阻抗變化范圍內(nèi),確定鎢合金( 93w ) 、無(wú)氧銅( ofc ) 、鈦合金( tc _ 4 ) 、工業(yè)純鋁( al )和鎂合金( mb _ 2 )五種綜合性能良好的金屬和合金材料作為波阻抗梯度飛片的復(fù)合體系,并測(cè)量了材料的相關(guān)聲學(xué)和力學(xué)參量。
Abstract : this paper introduces the choice and ramming of the refractories for the 12 t induction channel furnace , which is one of the import production facilities for producing “ oxygen free ” copper wire by upward - leading continuous casting . the cost of home - made refractories is only 1 / 5 1 / 8 of that of import one . it is of benefit to all similar import furnaces that the domestic refractiones were successfully rammed and used 文摘:介紹了引進(jìn)無(wú)氧銅桿上引法生產(chǎn)線中12t有芯感應(yīng)爐爐襯耐火材料的選用和砌筑工藝;運(yùn)行狀況良好,整個(gè)材料費(fèi)僅為進(jìn)口同類(lèi)材料的1 / 5 1 / 8 ;該熔銅爐爐襯的成功砌筑和使用,為其他同類(lèi)爐子爐襯耐火材料的國(guó)產(chǎn)化提供了范例。