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volume fraction of nitrogen 氮的体积分数
Rats in hypoxia groups were inhaled with the mixture of nitrogen gas (0.95 volume fraction) and oxygen (0.05 volume fraction) to establish acute hypoxia models, 2 hours every day and normoxia at other points of time that was the same as normal group. 缺氧1;3;5;7d组大鼠分别吸入氮气与大气的混合气体(氮气的体积分数为0.;95、氧气为0
Optimum wear reduction was obtained when the volume fraction of Kevlar pulp is 40 Vol%. 当纤维体积分数为40%25时，复合材料的比磨损率最小；
The volume fraction of methane,ethane, n -butane and propane are increased with the increase of dose. 甲烷、乙烷、丙烷和正丁烷的体积分数都随吸收剂量的增加而增加;
The normalized effective conductivity of the composite can be viewed as a function of the dipole polarizability and the volume fraction of the fiber. 复合材料之正规化有效导热度可视为此双极极化度与纤维体积分率之函数。
The results indicate that the PTA technique is a effective method to measure the volume fraction of recrvstal-lization quantitatively. 结果表明，使用PTA技术可以较好地定量测量含硼钢的再结晶体积分数。
Base on this, in this work we prepared in situ TiC or (TiB+TiC)/Ti-1100 composites with various volume fraction of reinforcements by the consumable vacuum arc melting. 主要研究结果如下:在所制备的原位自生(TiB+TiC)或TiC/ Ti-1100复合材料中,增强体TiB、TiC分布均匀,与基体界面洁净,没有明显反应层存在。
The results show that the volume fraction of hydrogen is increased with the increase of dose,but has little relationship with the concentration of N,N-diethyl hydroxylamine. 研究结果表明:氢气的体积分数随着吸收剂量的增加而增加,而与N,N 二乙基羟胺浓度的关系不大;
Air consists chiefly of nitrogen. 空气主要由氮气组成。
C/C composites were prepared by needled felt with fibre volume fraction of 40%, 30% and 25% densifying through chemical vapour infiltration for three times. 摘要以40%25，30%25和25%253种不同纤维体积分数的针刺整体毡为坯体，经3次化学气相浸渗后制备C/C复合材料；
The effects of carbides on as-cast microstructure of HSSs for roller, the relationship of the composition of alloy with the type and the volume fraction of carbide were analysed. 分析了碳化物对铸态组织的影响以及合金成分与碳化物类型、体积分数之间的关系。
The experimental results showed that an appropriate vacuum degree and volume fraction of liquid should be chosen for maximizing the cooling capacity of the evaporator. 实验结果表明，采用适当的真空度和液容率，可以提高微槽群蒸发器的散热效果。
The relations of the effective moduli of the composite,the thickness of the hollow sphere wall,volume fraction of the filler,and thickness of the coating were investigated. 分析了复合材料有效模量同空心微球壁的厚度、填充体积分数、涂层厚度等参数的关系。
The results show that the volume fraction of hydrogen is increased with the increase of dose, but has little relationship with the concentration of N,N-diethyl hydroxyla-mine. 研究结果表明：氢气的体积分数随著吸收剂量的增加而增加，而与N，N-二乙基羟胺浓度的关系不大；
The soil absorbs only a fraction of the rain that beats down. 土壤只吸收猛打到地面上的雨水的一部分。
I'll be ready in a fraction of a second. 我马上就好。
It was shown that the crystalline volume fraction of p-Si:H films on SnO2 is higher than those on ZnO:Al and SnO2/ZnO:Al,and the cluster size of p-Si:H films on SnO2 is also larger. 结果表明:在SnO2上沉积的p-Si:H膜的晶化率较其它两种衬底高,相应的SEM形貌显示颗粒尺寸也较大。
The story does not contain a fraction of truth. 这故事没有一点真实性。
The main reservoir of nitrogen is the atmosphere. 氮的主要蓄存库是大气层。
In view of this, and the known volume fraction of solute (suspended phase), it is concluded that interparticle interactions play a dominant role in the viscoelasticity of the microemulsions. 如此看来，加上已知溶质（悬浮相）的体积，就可以得出结论，颗粒间相互作用在微乳液的粘弹性中起主要作用。