脱溶转变是金属材料的一种重要固态转变，是时效处理的理论基础。
Desolation transformation is an important solid phase transformation of metals, and is the theoretical basis of aging treatment.
这是固态物理第一阶段的理论课程。
This is the first term of a theoretical treatment of the physics of solids.
内用无触点固态继电器，无噪声、理论寿命无限长。内部继电器容量：250V/30A。
Inner contactless solid relay is with lower noise, infinite theoretical service life. Internal relay capacity: 250V/30A.
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