The invention relates to an all volution rotary drying vacuum pump, belonging to the vacuum production equipment field.
全旋涡旋干式真空泵，属于真空获得设备领域。
The black race hair is black brown or black wool crimped hair and small volution make, hair is rude shortly but crispatura's.
黑色人种的头发是黑褐色或黑色的羊毛卷发以及小螺旋形发，头发是短粗而卷缩的。
The black race hair is black brown or black wool crimped hair and small volution make, hair is rude shortly but crispatura's.
黑色人种的头发是黑褐色或黑色的羊毛卷发以及小螺旋形发，头发是短粗而卷缩的。
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