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。
Specially shaped column frame structure is a new type of structure and there are not enough experiments and research on the joints, so it is necessary to take further research.
异形柱框架结构作为一种这种新型的结构形式，目前针对其节点的研究和试验较少，所以有必要进行深入研究。
This paper introduced the purpose, significance, approaches, effects and experience of setting up research-type chemical experiments based on practical problems.
介绍了开设基于实际问题的研究性化学实验的目的、意义、实施方法和效果及体会。
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