例句與造句

1. The surface surveillance radars were a DRBV 10-type one, installed in November 1948, above the conning tower, and a DRBV 30-type radar for navigation purpose, atop the main mast.
2. From 1951, a air and surface surveillance radar DRBV 11-type was installed atop the main mast, thus the DRBV 20-type and the DRBV 30-type radars were moved to the fore mast.
3. It's difficult to find surface surveillance radar in a sentence. 用surface surveillance radar造句挺難的