English to Chinese Other Engineering (general) general

For wide flange shapes with flange thickness over 3 in. [75 mm], the 80 ksi [550
MPa] maximum tensile strength does not apply and a minimum elongation in 2 in.
[50 mm] of 19 % applies.
C Yield point 32 ksi [220 MPa] for plates over 8 in. [200 mm] in thickness.
D Elongation not required to be determined for floor plate.
E For plates wider than 24 in. [600 mm], the elongation requirement is reduced two
percentage points. See the Elongation Requirement Adjustments subsection
under the Tension Tests section of Specification A6/A6M.

这里的floor plate应如何翻译。