【摘 要】
：
最高境界郑炳金老人绝非仅仅只是一个买卖翡翠玉料的商人,除了与清华大学研究人员共同撰写《翡翠色泽与化学》、钻研鉴赏等之外,20多年来他一直在不懈
The highest level of
论文部分内容阅读
最高境界郑炳金老人绝非仅仅只是一个买卖翡翠玉料的商人,除了与清华大学研究人员共同撰写《翡翠色泽与化学》、钻研鉴赏等之外,20多年来他一直在不懈
The highest level of the imperial family is no longer just an emerald jade trading business, in addition to Tsinghua University researchers and co-write “jade color and chemistry”, study appreciation, he has been relentless for more than 20 years
其他文献
This paper establishes a model of heat conduction and thermodynamic responses of a spherical cavity under shocks ofboth heat and pressure whose distribution
In order to investigate the ignition mechanism of HTPB propellants under high pressure waterjet, HTPB propellant of different formulas was used under high-p
The dynamic behavior of simple supported rectangular thin plate subjected to transverse harmonic excitation is investigated in this paper. The compressive l
To protect movable cultural relics,by shaking table tests oscillation responses of museum free-standing cultural relics under earthquakes were studied.Based
2020年11月26号上午,江苏省抗击新冠肺炎疫情表彰大会在南京举行.大会对全省抗击新冠肺炎疫情先进个人、先进集体进行表彰,连云港市交通运输局获评“全省抗击新冠肺炎疫情先
The movement of concrete fragment from internal explosion in reinforced concrete is analyzed, and a model is built for the description of fragments
The nonlinear governing equations of dynamic post-buckling of cylindrical shells are obtained aid the energy method and Hamiltonian system. Based on eig
In this paper, two loosely coupled single degree of freedom (SDOF) systems are used to generate pressure-impulse diagrams(P-I) with the flexural and direct
Quasistatic compressive strength of alumina cylinders was measured using specimen of two sizes. The strength of the material was dependent on the specimen s
A spherical cavity expansion model for concrete is first proposed by using an elastic-brittle-plastic material law with Hoek-Brown strength criterion.