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| 41. | By the end of 2001, there were 694000 water plants (stations) of various kinds in the rural areas in the whole country, 67.25 sets of manual pumped wells and 1.37 million water cellars for collecting rain. |
| 截止2001年底，全国农村有各种类型的自来水厂（站）69.4万座，手压机井6725万台，收集雨水水窖137万眼。 |
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| 42. | stop - check valve |
| 截止止回阀 |
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| 43. | By the end of 1998, China had a total of 165,600 social organizations. These organizations and their activities are subject to the protection of the Constitution and other laws. |
| 截止1998年底，全国共有社团165600个，它们的组织活动等都依法受到宪法和法律保护。 |
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| 44. | target cut-off voltage |
| 靶截止电压 |
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| 45. | grid current cut-off voltage |
| 栅极电流截止电压;栅极电流截止电压 |
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| 46. | the end of the year |
| 年底 |
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| 47. | The action due date must occur on or before the issue due date. |
| 任务截止日期不能晚于问题截止日期。 |
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| 48. | self - biased off |
| 自给偏压截止 |
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| 49. | self-bias cut-off effect |
| 自偏截止效应;自偏压截止效应 |
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| 50. | projected cutoff |
| 投射截止点 |
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