The position in the deep surface of the digastric muscle is the hightest position for cuting the accessory nerve.

二肌后为高位结扎切断副神经点，若再向上易伤颈内静脉。

The paper deals with the microstructrures and hight-temperatrure hardness of highchromium white cast iron with the austenitic and sorbitic matrices.

本文主要论述了以奥氏体及索氏体为体的高铬白口铁的组织和高温硬度。

The equipment is welded by thicken material .Break rigid material ia hight efficiency ,indeformable ,little moise .The dynamic nose of tool is knocked-down .It is easy to rubbing when it is dull.

该机采用加厚材料焊接而成，对硬料破碎效率高，不变、小，动力刀片草用可卸式刀片，用钝后可上下，方便磨刀。