charpy v-notch transition curve 夏比 ; 夏比V形缺口冲击值转变曲线
Generation of light hydrocarbons and natural gas are formed through catalysis of transition metals, such as Ni, V, Ti C etc.
轻烃和天然气是由富含干酪根矿物基质上过渡金属的催化作用形成，而不是干酪根和重质烃的热催化作用所致。
This thesis researches and designs media gateway system ISAM-V, which can provide access and control functions for VoIP and has the ability to have smooth transition to the next generation network.
本文旨在设计研究媒体网关系统ISAM - V，使其能提供IP电话接入控制功能，并具备向下一代网络平滑过渡的能力。
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