A suitable amount of OXA@Fn was dropped onto the copper wire mesh, and the morphology and element mapping of OXA@Fn was observed by transmission electron microscopy (TEM, JEM-F200, Japan). X-ray photoelectron Spectrometer (XPS, Thermo Scientific K-Alpha, USA) was used to detect the surface...
When the ram closed pipe and accumulator open onto each other, oil flows back in the open pipe or the pipe leaks oil at the same time, and the ram may stretch to the center of borehole. Otherwise, it is unlikely to occur as described earlier. The phenomenon where the ram stretches to...