conduit head
1.Andy squeezes through the hole head-first, emerges to the waist, He reaches for the opposite wall, manages to snag a steel conduit with his fingers.
2.Based on the former workers′ study results such as numerical simulation of fluid mechanics, seismic tomography of the whole earth and igneous rocks, the basic characte- ristics of mantle plumes are summarized in detail, namely the mantle plume, from the D″ layer near the core-mantle boundary (CMB) 2 900 km deep, is characterized by the shape of large head and thin narrow conduit, by the physical property of high temperature and low viscosity.
