2) cycle of positive feedback
正反馈循环
3) reversible cyclic bored machine
正反循环钻机
1.
In this construction through application of reversible cyclic bored machine and bentonite as the mud fluid the construction of large diameter bored pile can be ensured.
结合某大桥桩基础施工实例 ,介绍了钻机、钻头的选择方法 ,指出了掉钻、缩颈等常见故障的原因及预防措施 ,实践证明 ,用正反循环钻机钻进 ,以膨胀土制备泥浆 ,能保证在砂层灌注大孔径长桩的顺利施
4) normal & reverse circulation drilling
正反循环钻进
1.
Based on the status analysis on applicability of rotary drilling technique in home and abroad,through amount of engineering examples and spot practice,the author researched the applicability of rotary drilling technique and compared to normal & reverse circulation drilling.
在分析国内外旋挖钻进技术适应性研究现状的基础上,通过大量工程实例以及现场实践,以目前应用最多的正反循环钻进技术作为对比,初步研究了旋挖钻进技术的适用性,包括施工效率、施工质量、适用范围、施工成本等。
5) direct flushing and indirect flushing transfer
正反循环洗井转换
1.
According to the problems of present direct flushing and indirect flushing transfer operation a design for rapid direct flushing and indirect flushing transfer manifold is pot forward.
根据现有正反循环洗井转换操作中出现的问题,提出了正反循环洗井快速转换管汇的设计方案。
6) regular cycle
正规循环
补充资料：循环系统的进化鱼的循环系统
李瑞端绘
[图]
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条