"水泥浆搅拌机" can be translated into English as "cement slurry mixer" or "grout mixer" (where "grout" specifically refers to a thin, fluid mixture of cement, water, and sometimes sand, often used for masonry work or filling gaps).
Both terms are commonly used in the construction and engineering fields, with "cement slurry mixer" being more literal and "grout mixer" being a more specific and commonly recognized term in certain contexts.