Example sentences of "to a [adj] [noun pl] per " in BNC.

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1 The rate of propagation varies from one to a hundred metres per second , depending on the diameter of the axon .
2 On the information that I have , densities range quite considerably , from as low as ten workers per hectare up to a hundred workers per hectare , but on average somewhere around thirty four , forty three could be taken if one wished to choose an average .
3 In fact , only one per cent of plants in the rainforest have been fully analysed ; and yet the forests are being destroyed at the rate of fifty to a hundred acres per minute .
4 Pitcairn seamount lavas have O isotope ratios up to a few parts per million higher than the mantle value , which leads to the virtually inescapable conclusion that they contain a component that was once at the surface of the Earth .
5 Ponomarev 's calculation implied that there were 100 million to a billion fusions per second , that is 100 to 1000 in a muon 's lifetime , if nothing else ( such as sticking ) intervened .
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