螺纹车床

In the training of students making echelon screw thread by turning,the choosing and grinding of knife,putting knife into nip,putting workpiece into nip should be noticed;the lathe,choice of technics parameter,establishment of working steps should be adjusted.

在训练学生车削梯形螺纹时，要注意车刀的选择与刃磨、车刀的装夹、工件的装夹，要调整车床、选择工艺参数、确定工步。

This thesis combination machine for design processing many stalks the box ten screw threads of rights the bore bed.

昆明机床厂电话，车床主轴箱箱体右侧10-m8螺纹底孔组合钻床设计

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。