Based on the strain energy model presented by Sun-Zhang and the energy conversion and energy conservation,a new semicontinuum model is presented to calculate the nature frequency of a nanoscaled clamped-clamped silicon beam.
基于Sun-Zhang提出的应变能量计算模型,根据动势能转换与守恒原理,提出了用于分析硅纳米梁基波频率的半连续体模型。
Therefore,the transformation was carried out,that is,the rolling line of Ф650mm×1/Ф550mm×1/Ф550mm×4 is disposed to semi-tandem rolling and high rigidity rolling mills is used for finish rolling etc,so the size precision of the products is increased and the size defective index is reduced.
通过对轧线Ф650mm×1/Ф550mm×1/Ф550mm×4进行半连轧布置、精轧机组应用高刚度轧机等改造,提高了合金钢大棒的尺寸精度,使尺寸废品率从0。
Through controlling the smelting and rolling process strictly,adopting quick reheating process,redesigning and optimizing the pass sequence of the Φ650 mm×1 /Φ550 mm×1/ Φ550 mm×4 semi-continuous rolling line,the φ70～φ75 mm GCr15 bearing steel bars which were adopted by the 260 mm×300 mm continuous casting slab were successfully developed.
通过严格控制冶炼、轧制过程,采取快速加热工艺及对Φ650 mm×1/Φ550 mm×1/Φ550 mm×4半连轧生产线的孔型系统重新进行设计、优化,莱钢成功开发了采用260 mm×300 mm大断面连铸坯生产φ70～φ75 mm规格GCr15轴承钢棒材。
This paper introduces the practical experience that more thirty varieties and specifications of spring flat are produced using semi-continuous rolling and rolling without reheating from 140mm ×140mm cast square billets.
介绍了用140mm×140mm连铸方坯，采用半连轧工艺，一火成材生产力多个品种规格弹簧扁钢的实践经验，及该生产线的布置，设备性能参数，重点介绍了生产过程中各工序的工艺技术特点。
Bending and rotational behavior of semi-continuous composite beams;
半连续组合梁的抗弯和转动性能
Co-PET chips are prepared on semi-continuous esterfication and continous condensation experimental plant.
在半连续酯化、连续聚合的PTA法聚酯实验装置上进行了共聚酯的制备。
Acrylic resin emulsion with core-shell structure was prepared by means of semi-continuous seeded emulsion polymerization and pre-emulsification technology.
采用半连续种子乳液聚合技术和预乳化工艺制备了核壳型丙烯酸树脂乳液。
Microstructure and solute distribution of 7075 alloy produced by semi-continuous casting under electromagnetic vibration;
电磁振荡法半连铸7075合金的微观组织及溶质元素分布
Microstructural refinement mechanism on aluminum alloy produced by semi-continuous casting in electromagnetic vibration;
电磁振荡下半连铸Al合金凝固组织的细化机制
The influence of the intensity of electromagnetic vibration on the microstructure of 7075 alloy ingot cast by semi-continuous casting was examined,with a stationary magnetic field and a periodic one simultaneously applied.
采用同时施加一个稳恒磁场和一个交变磁场的方法,在半连铸7075铝合金过程中,使凝固熔体产生受迫振荡。