1 Scope This clause of part 1 is replaced by: This standard deals with the safety of electric cleaning appliances for household use which are intended for cleaning surfaces such as windows, walls and empty swimming pools by using liquid cleansing a

定价： 637元 / 折扣价： 542 元

定价： 1775元 / 折扣价： 1509 元

1. Scope 1.1 This Standard is concerned with the geometric irregularities of surfaces of solid materials. It establishes defi nite classifications for roughness, waviness, lay, and a set of symbols for drawings, specifications, and reports, and makes

定价： 319元 / 折扣价： 272 元

1 Scope and Field of Application This CSA Standard specifies delivery requirements which apply to the surface finish of hot-rolled plates and wide flats rolled on reversing mills, with nominal thicknesses equal to or less than 150 mm. For plates with

定价： 364元 / 折扣价： 310 元

1. Scope 1.1 These requirements apply to metal and nonmetallic surface raceway systems and combinations thereof intended for installations in accordance with the Rules of the Canadian Electrical Code, Part I. 1.2 These requirements do not apply to

定价： 455元 / 折扣价： 387 元