由STM图象中我们能清晰地观察到螺旋结构的螺距与螺径。
From the STMimages, we could see clearly the helix pitch and helix diameter of helix structure.
根据太沙基固结理论推导出了变径螺旋压榨压方程，得出了压榨速率的表达式。
According to Terzaghi consolidation theory, the partial differential equation and filtration formula of the change diameter screw compression were induced.
本文介绍一种测量石油螺纹量规的螺旋线、中径、锥度和牙形半角的新方法及装置。
This paper describes a new method and device for measuring helical line, pitch diameter, taper and half-angle of thread of petroleum thread gauges.
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