The tectonic stress the Earth are mainly on the upper lithosphere.
地球内部构造应力主要集中于岩石圈上层。
Cloud based academic writing system, mainly for upper secondary and post secondary education.
用于为高中和高中后阶段的基于云的学术写作系统。
Cloud based academic writing system, mainly for upper secondary and post secondary education.
用于为高中和高中后阶段的基于云的学术写作系统。
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