本文介绍了一种新型的路面破碎压实两用设备—4YCT30破碎压实机，论述了破碎压实机的冲击破碎原理和基本性能结构。
This artide introduces a new two purpose equipment for road surface's crashing and pressing—4YCT30. It covers the principle of the machine's crashing and pressing and the basic capability structure.
本文阅述了具有专科学历小学教师的知能结构的特征，用定性和定量相结合的方法分析了专科学历小教师的知识和能力的构成要素。
This thesis expounds the characteristics of the knowledge and ability composition of the primary school teachers who have the professional college record of schooling.
本发明涉及一种探头芯体专用树脂沙及用其制作的高效能结构副枪复合探头。
The invention relates to resin sand specially used for probe cores and a high-efficient structural sublance dual probe made of the resin sand.
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