Research and experiments show that this transformed type multiple agent extends the field of application of temperature of the cracking agents, and it has evident synergetic action.
经研究和试验表明：这种改型复合剂扩大了破碎剂的温度适用范围，并具明显的增效作用。
Thus the stress increment of the external tendons under the action of various loads type and size and its location has become an important research project.
而体外索在不同荷载形式及其大小、作用位置等因素影响下的应力增量就成为一个重要的研究课题。
Beginning in the 1980s, teachers began to be encouraged to participate in teaching research, and action research was one type.
八十年代以来，一种鼓励教师参与的科研方式进入了教学领域。
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