2.8 m,is one of the heaviest in the world,which composition is:Δ[C]≤±0.01 %,[H]=(0.8 2.0)×10 -6 ,[Al]= 0.005 % 0.007 %, [O],[S]=(18 25)×10 -6 .No≥1.6 mm defect was found in the forgings from the ingot.
CuO was reduced to Cu slowly by H 2 in the induction period and the small quantity of Cu could dissociate and adsorb H 2 to active[H],then [H] quickly reduced the CuO and NiO to Cu and Ni,which simultaneously formed Cu 3 8 Ni alloy.
催化剂在还原过程中存在诱导期和还原期， 首先 H2 缓慢还原出少量 Cu ， Cu 又解离吸附 H2 为活泼 ［ H］ ， ［ H］ 能较快地还原 Ni O 和 Cu O， 并形成 Cu38 Ni 合金。
If the interrogative sentence adhering to Ne is located at the beginning of a Macro-line[H], it always associates with a proposition P and Macro-line [H] is trigger by P. Speaker reminds hearer to pay attention to the irrationality(Q) of P and it is Q that leads speaker to use this kind of interrogative sentence.
The genetic control of the seed trait under consideration, (i.e., subject to the maternity or endosperm/embryo genotypes), as well as additive variance σ 2 d , dominant variance σ 2 h , error variance σ 2 e , average additive effect and average dominance effect can be tested and estimated statistically for all of the above diallels.
The results show that decarburization time can be shortened by 3 min with carbon content up to 20 ppm,hydrogen content can be lowered to 1 ppm and desulphurisation efficiency is at 60% by adding 5 kg/t flux.
We found that the amount of Si-H can be de- fined by the characteristic ions of SiO[CH3]2 and SiOHCH3.By comparing the intensities of m/z 59(y) and m/z 74(x) peaks in mass spectrum, the active hydrogen content can be deter- mined.
According to solidification characteristic of Up casting and thermodynamic theory, the forming mechanism of gas holes was analyzed. It is presented that the gas holes were caused by vapours. Hydrogen reacts with oxygen and forms water vapour H 2O (g) , that is, 2+=H 2O (g) .
We prove that is a tensor ideal in, generalizing H.
We study discrete (Kleinian) subgroups of the isometry group Iso+H4 of the real hyperbolic space of dimension 4.
The symmetric varieties considered in this paper are the quotientsG/H, whereG is an adjoint semi-simple group over a fieldk of characteristic ≠ 2, andH is the fixed point group of an involutorial automorphism ofG which is defined overk.
In the casek=C, De Concini and Procesi (1983) constructed a "wonderful" compactification ofG/H.
We describe all pairs (G, H) such that, for any affineG-varietyX with a denseG-orbit isomorphic toG/H, the number ofG-orbits inX is finite.