There occours needle - type or M - type martensite precipitation within retained austenite.

残余奥氏体内有针状或“M”型马氏体析出.

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The nano M - type barium hexaferrite was prepared by the citrate sol - gel process.

采用溶胶 - 凝胶法制备掺杂钡离子的纳米六角晶型铁氧体.

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Use an M - type V - belt.

请使用M型皮带.

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An experiment on a single - stage G - M type coaxial pulse tube refrigerator was introduced.

介绍了 单级 G -M 型同轴脉冲管制冷机,双向进气方式采用两个方向相反的阀门并行布置.

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