Be dead set against là gì

00-database-info, 00-database-short, 00-database-url, 1 to 1 relationship, 1 to many relationship, 1-byte character code, 1-byte character set, 1-byte character string, 1-byte character, 2-way device, 2D (two dimension), 2D configuration, 2D image, 2D module = two-dimensional module, 3D (three dimension) calculation,