| 单词 | picket machine |
| 释义 | > as lemmaspicket machine picket machine n. ΚΠ 1848 Sci. Amer. 21 Oct. 37/2 One of the best means of beautifying their homes is the design of the Picket Machine. 1868 Water-power of Maine (Maine Hydrogr. Surv.) 58 A saw mill, grist mill, shingle machine, picket machine and threshing machine on Purington stream. 1999 Amer. Industr. Hygiene Assoc. Jrnl. (Nexis) 60 The extremely high levels [of wood dust] observed at sawmills were due to..ineffectively ventilated machines (Dry Mill E, molder operator = 51 mg/m3; picket machine operator = 67 mg/ml). < as lemmas |
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