Example sentences of "[vb base] about 30 " in BNC.
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| 1 | In the vegetable cell these cellulose molecules form very long , more or less crystalline , threads or fibrillae which are about 150–200 Å thick , say about 30 to 40 molecules wide . |
| 2 | The small crystals melt about 30 K lower than the large ones due to the greater contribution from the interfacial free energy in the smaller crystallites , i.e. there is an excess of free energy associated with the disordered chains emerging from the ends of ordered crystallites and this is relatively greater for the small crystallites , resulting in lower melting temperatures . |
| 3 | Figures for the last week in November — the latest available — show about 30 cases per 100,000 population . |
| 4 | Figures for the last week in November — the latest available — show about 30 cases per 100,000 population . |
| 5 | The creation of artificial waters does much to replace this loss , and five of the 12 sites in the table are gravel pits or reservoirs and support about 30 per cent . |
| 6 | It is well known that any such sheet of water will attract birds , and these reservoirs ' main importance is for the wintering wildfowl Table VI ( p. 33 ) gives an indication of the ornithological importance of the four major reservoirs which attract about 30 per cent . |
| 7 | It has been estimated that in this way US soybean plantations leak about 30 billion cubic metres of hydrogen annually . |
| 8 | An ideal programme includes exercise sessions which last about 30 minutes three to four times per week . |
| 9 | The psychological effects are brief , depending on dosage and route of administration , but usually last about 30 minutes . |
| 10 | Follow instructions in the cottage re water on and off ( arrival/departure ) — and allow about 30 minutes for tanks to drain fully before departure — always slower than one thinks ! |
| 11 | ‘ I know I am only 20 , but some days I feel about 30 so much has happened to me . ’ |
| 12 | Tendon injuries affect about 30 percent of horses involved in National Hunt Racing and is probably the largest cause of wastage in racehorses . |
| 13 | ‘ I paint about 30 pictures a year and I usually have about four on the go at once . |
| 14 | Etching times in HF vapour depend on the nature of the rock : feldspars , for example , require about 30 minutes etch before they are to be stained . |
| 15 | The US and Japanese markets each represent about 30 per cent of world capitalisation compared with about 8 per cent for the UK , so are general US or Japanese funds really specialised ? |
| 16 | Patten/Lawley : You have about 30 seconds Mr Kinnock to tell them why you wo n't say where you stand on this as the other leaders do . |
| 17 | ( 1 ) Standing committees — these normally have about 30 members drawn from parties represented in the House . |
| 18 | These comprise about 30 units of accommodation , and we have to regard each of these as a profit centre . ’ |
| 19 | It was a good walk into the girls ’ orphanage at Codlea and see about 30 of them happily at their machines under instruction from a tutor I had taught last year . |