Example sentences of "[adv] about 20 " in BNC.

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No Sentence
1 What is its maximum branching ratio ? perhaps about 20 depending on the number of crates
2 What is its maximum branching ratio ? perhaps about 20
3 When we arrived there were only about 20 people in the audience and he was n't dressed in a dress .
4 The gamma dose rate proved to be only about 20 per cent — reasonably typical for clay materials .
5 It is believed restaffing the Angus plant will create only about 20 jobs .
6 Although membership remained low , only about 20 per cent of the West Bank labour force , the resurgence of the union movement symbolized a new national populism which the authorities seemed unable to stifle .
7 Only about 20 per cent of the carbon in the coal ends up in the gas in either process , so carbonisation is not an efficient method for producing a carbon-based gas from coal .
8 He recalls that a petrol engine is only about 20 per cent efficient ; most of the energy of its fuel appears as heat in its radiator and exhaust .
9 . only about 20 birds still exist in the wild and in-breeding is feared .
10 ‘ So far , only about 20 people have taken the money , ’ Collinson says .
11 Only about 20 per cent do , yet this is supposed to be why we 're here .
12 IDEC felt confident that it would be able to attract a high percentage of its staff to this location as the area not only offered a pleasant environment but was only about 20 miles from north London .
13 Only about 20 per cent of local government revenue was being raised from households actually required to pay rates .
14 Only about 20 per cent .
15 The manufacturing base , which is already nearing the limits of viability — it is only about 20 per cent .
16 Individually the trusts were small , usually maintaining only about 20 miles of road , but as they were formed and linked , the basis for a coherent road network was being established .
17 But only about 20 ( 1.7% ) bear the name of a woman .
18 But only about 20 ( 1.7% ) bear the name of a women .
19 In contrast penetrative magmatism , whereby hot and partially molten material from the asthenosphere forces its way up towards the surface , is a much more rapid mechanism of heat transfer and is capable of thinning 100 km thick lithosphere and producing uplift at the surface in only about 20 Ma .
20 There are already about 20 PHCN training schools in SA and most people acknowledge that this is an essential addition to the health service .
21 The job cycle is thus about 20 minutes for any group of operators in either straight-line or dock assembly .
22 Usually about 20 to 40 birds are involved , but there were about 200 in 1964 .
23 It is estimated that there are still about 20 hectares in production , mostly in the Aube and in Vertus on the Côte des Blancs .
24 In its latest expedition , an improved vehicle took thousands of still shots and 23 hours of videotape of the Hamilton and the Scourge , both about 20 metres long and top-heavy with cannon for more fire power .
25 C. Most of the pits sunk about a hundred years ago were to mine the coal which was near the surface , within about 20 fathoms ( 40 m ) depth or so .
26 I. On all types of land within about 20 km of Belfast the farmers want to take advantage of the large market in the city .
27 In Nigeria the foreign investors ' share is now about 20 per cent , with the bulk of the remainder held in the Nigerian private sector ; the localization legislation created over one million individual shareholders .
28 Certainly , little fragmentation could exist beyond about 20 km because of the high pressure of the overburden .
29 However , it can be shown that the containment is weakest at the magnetic equator , and the outcome is leakage from the belt beyond about 20 R J .
30 Eight weeks later the questionnaires were sent out and again about 20 per cent responded with completed details .
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