Example sentences of "at [conj] close to " in BNC.
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1 | Working at or close to maximum rpm , an engine is relying entirely on power ( = torque × rpm ) to overcome resistance and/or accelerate . |
2 | The extinction of many marine foraminiferal and ostracode species at or close to the Eocene-Oligocene boundary could be bound up with the establishment of the layer of cold , deep water in the oceans known as the psychrosphere . |
3 | In all of these proteins , however , the metal is bound at or close to the surface . |
4 | A number of highly conserved glycines and other small residues at the C terminus of GH5 lie at or close to the turn of the β -hairpin , and presumably are required to form the hairpin without steric hindrance . |
5 | During the summer breeding gulls , skuas , terns and cormorants feed close to land ; the rest range widely over the ocean , browsing at or close to the surface in single-species or mixed flocks . |
6 | There were no sustained views that stress — arising again in the main from discipline issues — could be alleviated by efforts directed at or close to its source . |