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The relationship be-tween the erosional soil surface and the erosional soil modulus is nonlin-er,but a power relation,that is:M=

建立了土壤侵蚀面与区域侵蚀模数间的回归模型,M=

The high compressive strength is obtained when the modulus of the activator viz., molar ratio of SiO2/Na2O is 1.5, and the proper content of this activator evaluated by the amount of Na2O to the high-calcium fly is 10 %. The compressive strength of these samples is 63.4 MPa when they is cured at 75 oC for 8 hours flowed by curing at 23 oC for 28 days. The main gels of geopolymer and calcium silicate hydrate, and Gismondine co-exist and bond some remaining unreacted fly ash spheres.

结果表明:复合碱激发剂适宜的模数M =n(SiO2)/n(Na2O)为1.5,掺量为Na2O当量10%;适宜养护条件为,75oC养护8h,然后在23oC室温养护至所需龄期,其28d抗压强度达63.4MPa;碱激发高钙粉煤灰同时生成地聚合物凝胶和水化硅酸钙凝胶,并有类沸石矿物生成,反应产物与未反应的粉煤灰颗粒胶结成较为密实的高钙粉煤灰地聚合物。

Good thermal stability and self-extinguishing behavior was observed with the cured polybenzoxazine resins. Second, furan-containing benzoxazine monomers, P-FBz, BPA-FBz, and 4FP-FBz were prepared using furfurylamine as a raw material. Formation of furfurylamine Mannich bridge networks in the polymerizations of P-FBz and BPA-FBz increased the cross-linking densities and thermal stability of the resulting polybenzoxazines. P-FBz and BPA-FBz- based polymers also exhibited high glass transition temperatures above 300℃, high char yields, and low flammability with a limited oxygen index value of 31. The dielectric (Dk3.21–3.39) and mechanical properties (high storage modulus of 3.0–3.9 GPa and low coefficient of thermal expansion of 37.7– 45.4 ppm) of the P-FBz and BPA-FBz-based polymers were superior or comparable to other polybenzoxazines. 4FP-FBz used for polybenzo- xazine modification by means of formation of benzoxazine hybridation with P-FBz.

第二部份以2-呋喃甲胺为起始物,制备了P-FBz、4FP-FBz与BPA-FBz 三个含呋喃官能基之氧代氮代苯并环己烷的单体;BPA-FBz与P-FBz於开环聚合中形成之Mannich bridge网状结构有效地提升聚氧代氮代苯并环己烷聚合物之交联密度与热安定性;Poly与Poly具有大於300℃之玻璃转移温度、高的焦炭生成率与具有31之极限氧指数(Limited oxygen index, LOI)的难燃性特质,Poly与Poly之介电常数(Dk=3.21~3.39)与机械性质[3.0~3.9 GPa的储存模数与37.7~45.4ppm之低热膨胀系数( Low coefficient of thermal expansion, Low CTE)]均较其他聚氧代氮代苯并环己烷为优;4FP-FBz具有低之介电常数(Dk=2.7),以其作为降低介电常数之反应型改质剂,与P-FBz混成,证实可有效地降低Poly的介电常数。

With the thermal analysis the paper researches the solidification process of the hypoeutectic Al-Si alloy.

用热分析技术分析亚共晶Al-Si合金的凝固过程,发现样杯模数、样杯结构是影响其凝固过程特征的主要因素。

With the promotion of SiO2/K2O molar ratio, the results showed that the shield effect of impenetration of corrosion medium to substrate was enhanced and the dissolution resistance of zinc particles in the coatings was increased with the Ecorr of the coatings.

结果表明,水性无机富锌涂料随着水基模数的增加,涂层腐蚀电位增高,涂层对腐蚀介质的屏蔽性能增强,涂层中锌粉颗粒的活性溶解阻力增大。

Low γ ray with 59.6keV energy acts as excitation for rare earth inaqueous and organic phase samples in separation processes by solvent extraction. As aresult, characteristic K series X-ray fluorescence of rare earths emitted. X-ray wasdetected by high purity planar Ge after transmitting Be window. The signals wereamplified by pre-amplifier or main amplifier, and the amulated signals are converted todigital ones.

对溶剂萃取法生产稀土流程中的有机相和水相试样,采用放射性核素〓的59.6keV单色能量激发稀土元素,得到特征K系X射线荧光,透过Be窗经高纯平面锗半导体探测器检测其强度,再经放大器、模数转换和多道缓冲存诸记录试样的能谱。

Along with development of electronic technology, especially VLSI and mixed signal circuits,where there are physical or functional blocks and subnetworks which are indiscerptible in the network, it shows its practical value.

随着电子技术的发展,特别是超大规模模拟电路和模数混合电路发展,对于电路中存在着物理上或功能上具有不可分割的功能块或子网络时,该方法更显其工程实际意义。

A new strip-line beam position monitor system was designed recently,which is not interceptive to beam,qualified in precision and easy to digitalize the results.

信号处理系统选用对数比的信号处理方法,由带通滤波器、对数检波模块、信号放大器、模数转换模块和上位机组成。

Now a member of the Kapp Group, Niles shares in the development and implementation of joint technologies such as the use of Kapp CBN tools for large module gears.

现在的成员之一,柯组, niles股份,在制定和执行联合技术,如使用柯cbn刀具大模数齿轮。

Main lambdoidal transmission gear of the great girder rolling mill is the key machine of this system.. It"s belongs to big modulus wide gear enduring heavy loads so it"s surface is easy to be hurt.

大型轨梁轧机主传动人字齿轮是轧机主传动系统的关键设备,该人字齿轮是大模数宽齿轮,承受载荷较大,易对齿面造成损伤。

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歌手leona刘易斯和前率领的飞艇的吉他手吉米页出现巴士转化为基层所涵盖的嘉年华花车,和一双合并为一移交&整个lotta爱&。

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