在远程学习状态下，由于师生分离的原因，师生之间存在跨越心理空间和物理空间的 交互影响距离 ( Transactional Distance )，加强师生交互可有效地缩短这个距离[7]。
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对远程教育学科定位问题、交互影响距离理论也应该有新的认识。
In addition, we should have new understanding to the orientation of discipline and the theory of transactional distance.
由此出发，本文考察了“工业化理论”和“晚现代性理论”、“交互影响距离和学习者自主理论”和“有指导的教学会谈理论”等。
Industrialization theory, late modernity theory, theories of alternative affect distance and learner in independence and instructive conversation theory were discussed.
结果表明：氧气流量、燃气流量和喷涂距离对涂层磨粒磨损性能具有交互影响。
It is shown that the flows of both propane and oxygen and spray distance have an interaction on the abrasive wear performance of the coatings.
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