Refer to Architect's General Specification for concrete strength and mortar mix.

混凝土强度及灰浆混合比例须参照建筑师之基本规范。

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Several soldiers mix cement on the street, lifting it up to their colleagues who use it as mortar, placing a concrete block on top of concrete block.

几名士兵在街道上混合水泥，举给同事们当砂浆用，累砌混凝土块。

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A couple of soldiers mix cement on the street, lifting it up by a backhoe to their colleagues who use it as mortar, placing concrete block on top of concrete block.

几名士兵在街道上混合水泥，用锄铲机举升给同袍们用作砂浆，一层层地累砌混凝土砌块。

youdao

Back to the bricks and mortar (well, plastic and metal) hardware, there's pretty much everything here you need to mix your way up from beginner to gigging DJ.

ENGADGET: Pioneer XDJ-Aero review: a DJ controller that loves music, hates physical formats