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41. | express oneself without redundancy |
| 精练地表达意思. |
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42. | laboratory proficiency testing |
| 实验室能力验证 |
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43. | assess technical proficiency |
| 技术考核 |
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44. | polish of sb's style |
| 某人精练的文体 |
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45. | Proficiency Grade Certificate |
| 基本能力测验证书 |
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46. | finishing scouring |
| 复练,后精练 |
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47. | incomplete degumming |
| 精练不良,脱胶不良 |
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48. | degumming at low temperature |
| 低温脱胶,低温精练 |
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49. | degummed silk fabric |
| 熟悉绸,精练绸缎 |
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50. | drum scouring machine |
| 转鼓精练机 |
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