at the head of

adv.

在…的最前面；

A signaling mucin at the head of the Cdc42- and MAPK-dependent filamentous growth pathway in yeast.
Storm‐induced sediment gravity flows at the head of the Eel submarine canyon, northern California margin
A Large Paleolake Basin at the Head of Ma'adim Vallis, Mars
Puig, P. et al. Storm-induced sediment gravity flows at the head of the Eel submarine canyon, northern California margin. J. Geophys...
Glacier Changes at the Head of Yurungkax River in the West Kunlun Mountains in the Past 32 Years
Recent sedimentation events at the head of Saguenay Fjord, Canada
Evidence for gas accumulation associated with diapirism and gas hydrates at the head of the Cape Fear Slide
Analysis and correction of errors in precipitation measurement at the head of Urumqi River, Tianshan
Late Cenozoic evolution of the outer continental shelf at the head of the Cape Canyon, South Africa
Flying at the head of the pack: Wnt biology in Drosophila.