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constriction; self focusing | |||
contraction; reduction | |||
choking; contraction (Bogensaeule-Kontraktion); contraction of area; neck; necked-down portion (eines Ventilschaftes usw); necking; reduction of area; restriction |
Einschnuerung: 22 短语, 3 学科 |
地球科学 | 12 |
技术 | 7 |
生命科学 | 3 |