High-speed steel is also___________________(know) as self-hardening steel.
High-speed steel is also___________________(know) as self-hardening steel.
Steel structure involves sub-structure or members in a building made______ structural steel.
Steel structure involves sub-structure or members in a building made______ structural steel.
If the carbon content of a type of steel is 0.1%， this steel is a kind of （ ）. A: low-carbon steel B: medium-carbon steel C: high-carbon steel D: HTLA steel
If the carbon content of a type of steel is 0.1%， this steel is a kind of （ ）. A: low-carbon steel B: medium-carbon steel C: high-carbon steel D: HTLA steel
If the carbon content of a type of steel is 0.1%, this steel is a kind of (). A: low-carbon steel B: medium-carbon steel C: high-carbon steel D: HTLA steel E: 2-1-1 F: 章测
If the carbon content of a type of steel is 0.1%, this steel is a kind of (). A: low-carbon steel B: medium-carbon steel C: high-carbon steel D: HTLA steel E: 2-1-1 F: 章测
Steel structure is the engineering structures made of shaped steel and steel plate.
Steel structure is the engineering structures made of shaped steel and steel plate.
Competely annealing is mainly used for ( ). A: hypoeutectoid steel B: eutectoid steel C: hypereutectoid steel D: all steel
Competely annealing is mainly used for ( ). A: hypoeutectoid steel B: eutectoid steel C: hypereutectoid steel D: all steel
Originally, E.U was only limited to coal and steel.
Originally, E.U was only limited to coal and steel.
______is the engineering structures made of shaped steel and steel plate.
______is the engineering structures made of shaped steel and steel plate.
Which is more brittle, glass or steel? A: glass B: steel
Which is more brittle, glass or steel? A: glass B: steel
When carbon is added to iron in proper _________ the result is steel.
When carbon is added to iron in proper _________ the result is steel.