| 释义 |
ˈpress-board
[f. press v.1 or n.1 + board n.]
1. An ironing-board; spec. (see quot. 1939).
1849G. G. Foster New York in Slices i. 14 The press-board has been placed across the back corner of the shop. 1896J. C. Harris Sister Jane i. 17 I've got this press-board on my lap, or I'd fetch it myself. 1924W. D. F. Vincent et al. Cutters' Pract. Guide Body Coats 33/1 The seam should be placed straight on the press-board in front of you. 1939M. B. Picken Lang. Fashion 116/2 Press-board, padded board, a small ironing board, used for pressing fabrics when sewing.
2. Electr. Engin. (Written pressboard.) A material consisting of compressed laminations of paper, used as a separator or insulator in electrical equipment; a piece of this.
1910H. M. Hobart Dict. Electr. Engin. II. 415/1 Pressboard, sometimes termed pressed board, a fibrous material closely resembling press-spahn. 1926A. P. M. Fleming in J. A. Fleming Electr. Educator II. 1354/2 The manufacture of pressboards..is the same as for paper making so far as the production of pulp. 1952J. P. Casey Pulp & Paper II. xvi. 957 Pressboards made..in thicknesses ranging from 0·005 to 0·125 in. are used as a spacing and insulating medium. 1973R. W. Sillars Electr. Insulating Materials vii. 123 Pressboard is prepared from cotton rag fibres or from pulp processed like other electrical papers, but instead of drying out as a single layer, a number of wet layers are placed together, pressed in a hydraulic press and dried by heat. |