Example sentences of "[n mass] over a period [prep] " in BNC.

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1 He noted however that few computer-based circulation systems include as standard features the ability to cumulate data over a period of years , or to analyse the data as required , so that much in-house development of existing systems was necessary .
2 Inserts to b and c show the changes expected in the Pb isotopic composition of a model array of data over a period of 130Myr with μ ( 238 U/ 204 Pb ) values comparable to those found in the erupted basalts .
3 He had experimented in administering the powder to about fifty people over a period of five years ‘ and never failed in the cure ’ , except in some cases of severe or chronic ague , which required the addition of some grains of quinine .
4 And it maybe about a relationship that will build up with these people over a period of time and I know it 's expensive as negotiation .
5 relationship , I mean do set up , I mean , if you get into , if you establish relations with me then it 's an ongoing thing , it can be , and it ought to be , so you actually do see the same people over a period of time , and you do establish a modicum of trust , not entire trust , because it 's asking too much for entire trust in all circumstances , but at least there is a certain understanding , particularly with the , on the , on the local basis .
6 While not giving details of the pricing , he said that the price-performance curve on the 80486 is the basis for pricing of the Pentium and that he expected the sort of dynamic that applied to the 80486 to apply to the Pentium as well — the 80486 being introduced at $900 to $1,000 and falling to $200 over a period of four years — at a rate of 30% per year .
7 If imports account for close to 50% of UK sales in those sectors , a 10% devaluation would directly raise the RPI by around 2% over a period of , say , one to two years .
8 The majority received 100 mg over a period of 3 hours .
9 In 1981 , sterling declined by approximately 11% over a period of nine months , thus enabling inflationary pressure to be effectively contained by releasing it slowly .
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