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41. | hexagonal angle |
| 六角形角尺 |
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42. | Nominal angle |
| 标称角度 |
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43. | Angle probe |
| 斜探头 |
|
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44. | shielding angle |
| 屏蔽角 |
|
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45. | switching angle |
| (Q开关的) 开关角 |
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46. | adjusting angle |
| 旋轮安装角 |
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47. | dropping angle |
| 投射[弹]角 |
|
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48. | bipartition angle |
| 对分角 |
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49. | heliocentric angle |
| 日心角 |
|
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50. | inflection angle |
| 偏转角 |
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