gear

Strengthen labor safety, make a good job of safe production

Strengthen labor safety, make a good job of safe production (1982, April)

Be careful about machinery inflicting wounds on people

Be careful about machinery inflicting wounds on people (1984, April)

We are the masters of science

We are the masters of science (1978, July)

Gears on top of machinery must be covered

Gears on top of machinery must be covered (1954, April)

Greatly develop the mechanization of agriculture, spread the successful news of applying science in tilling the fields

Greatly develop the mechanization of agriculture, spread the successful news of applying science in tilling the fields (1979, January)

Careful with the "tiger mouth"

Careful with the "tiger mouth" (1981, April)

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