The present status of the study on rare-earth heat stabilizer has been reviewed, especially about its synthesis, properties of heat stabilization, processing and mechanical properties of PVC product.
本文对PVC稀土热稳定剂的研究现状做了详细的综述，着重介绍了稀土稳定剂在合成、 热稳定性能、加工性能以及PVC制品的力学性能等各方面的研究开发情况。
A mechanical model for installing tubing stabilizer in vertical well is established, and a method of calculating axial force in tubing is presented.
建立了竖直井安装扶正器的油管力学模型，给出了油管任意横截面轴力的计算方法，导出了相邻扶正器之间油管失稳的临界状态方程。
One four redundant steering engines is a crucial component of aircraft stabilizer manipulative systems, and it is a complicated system related to mechanical, electrical and hydraulic elements.
某型四余度电液舵机是飞机平尾操纵系统的关键部件，是机、电、液高度耦合的复杂系统。
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