求翻译：转向泵产生噪声的主要原因是系统内混入空气，尤其在液压泵的吸油区，由于压力较低，容易产生空穴，即气泡在高压区体积被压缩，到低压区时，体积突然增加，产生爆炸而形成噪声。因此，进油管路安装时必须密封可靠，防止因振动造成接头松动；密封材料要十分可靠，并保持油箱有足够的液压油。是什么意思？

The main reason for the steering pump noise is mixed with air within the system, especially in the suction area of ​​the hydraulic pump, due to lower pressure, easy to produce holes, bubbles in the volume of the high pressure area is compressed, a sudden increase in the area of ​​low pressure, volum

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