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41. | purchase of books |
| 图书采购 |
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42. | frequency of purchase |
| 采购频率 |
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43. | circular buying |
| 循环采购 |
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44. | purchasing Section |
| 采购科 |
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45. | Procurement Assistant |
| 采购助理 |
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46. | procurement system |
| 采购系统 |
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47. | Procurement Branch |
| 采购处 |
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48. | purchasing ordinances |
| 采购条例 |
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49. | procurement in bulk |
| 大批采购 |
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50. | purchase estimate |
| 采购估计 |
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