Example sentences of "[noun pl] [am/are] [verb] at low " in BNC.

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1 The current popular level of application of smoke vents to some 3–5% of the floor area does seem low for the fire loads and rate of growth of fire , likely to be experienced in high-bay warehouses particularly when it is borne in mind that unless similar automatic ingress vent areas are provided at low level the effective ceiling vent areas might well be halved !
2 The tidal range in this estuary is large ( 7m at spring tides ) and large sandbanks are exposed at low tide .
3 First , aposematism is favoured , when the prey families are found at low densities ( that is , are relatively rare ) compared with that of their main predators .
4 This , in turn , reduces the ability of companies to supply any later upturn in demand , so inflationary bottlenecks are encountered at lower levels of economic activity .
5 In addition , both ICAMs are expressed at low levels on resting vascular endothelium ; ICAM-1 is strongly upregulated by cytokine stimulation and plays a key role in the arrest of leukocytes in blood vessels at sites of inflammation and injury .
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