铲除 发表于 2025-3-21 18:44:44
书目名称Vibrations of Shells and Rods影响因子(影响力)<br> http://impactfactor.cn/if/?ISSN=BK0982800<br><br> <br><br>书目名称Vibrations of Shells and Rods影响因子(影响力)学科排名<br> http://impactfactor.cn/ifr/?ISSN=BK0982800<br><br> <br><br>书目名称Vibrations of Shells and Rods网络公开度<br> http://impactfactor.cn/at/?ISSN=BK0982800<br><br> <br><br>书目名称Vibrations of Shells and Rods网络公开度学科排名<br> http://impactfactor.cn/atr/?ISSN=BK0982800<br><br> <br><br>书目名称Vibrations of Shells and Rods被引频次<br> http://impactfactor.cn/tc/?ISSN=BK0982800<br><br> <br><br>书目名称Vibrations of Shells and Rods被引频次学科排名<br> http://impactfactor.cn/tcr/?ISSN=BK0982800<br><br> <br><br>书目名称Vibrations of Shells and Rods年度引用<br> http://impactfactor.cn/ii/?ISSN=BK0982800<br><br> <br><br>书目名称Vibrations of Shells and Rods年度引用学科排名<br> http://impactfactor.cn/iir/?ISSN=BK0982800<br><br> <br><br>书目名称Vibrations of Shells and Rods读者反馈<br> http://impactfactor.cn/5y/?ISSN=BK0982800<br><br> <br><br>书目名称Vibrations of Shells and Rods读者反馈学科排名<br> http://impactfactor.cn/5yr/?ISSN=BK0982800<br><br> <br><br>EXUDE 发表于 2025-3-22 00:02:17
Piezoelectric shellsby electrodes, and the time-dependent voltage, ϕ.(.), be specified on them. The problem is to construct a two-dimensional theory of piezoceramic shells that enables one to determine their resonant vibrations in a wide range of frequencies.milligram 发表于 2025-3-22 01:25:50
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Elastic shells called an elastic shell, the surface . its middle surface, and . its thickness. A plate is the special case of the shell, whose middle surface is plane. The shell is said to be thin if . is much smaller than the characteristic sizes as well as the radius of curvature of the middle surfacefolliculitis 发表于 2025-3-22 14:40:17
http://reply.papertrans.cn/99/9828/982800/982800_6.png人类学家 发表于 2025-3-22 17:50:58
Preliminariesare denoted . .... In a chosen fixed cartesian co-ordinate system a point . corresponds to a triple (., ., .), with . being its i-th co-ordinate. The translation space of ., is denoted by ν it is a three-dimensional vector space. Elements of ν are called (spatial) vectors and are denoted with boldfa书法 发表于 2025-3-23 01:01:08
Elastic shells three-dimensional Euclidean space ɛ, bounded by a smooth closed curve ∂. (in the case of closed surfaces ∂. = ∅). The surface is described by a vector equation.=.(.,.),.where . is a smooth vector-value function of two variables ., .. At each point of the middle surface we restore the segment of len良心 发表于 2025-3-23 01:52:51
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