| 1. | Spindle feeds and speeds are controlled by selector levers which engage the proper gears in the drill head .
主轴的进能量和转速是通过选速杆使主轴箱中的适当齿轮相啮合而控制的。 |
| 2. | Spindle noses and adjustable adapters for multiple spindle drilling heads
多轴钻床床头箱的轴头和可调接续器 |
| 3. | Spindle noses and adjustable adapters for multiple spindle drilling heads
多轴钻床床头箱的轴头和可调适配器 |
| 4. | The mast assem - bly supports the rotary drill head and its hoisting mechanism
支架组件支持转动钻头及其提升机构。 |
| 5. | Air hydraulic drill head
气动液压钻头 |
| 6. | Railway material in general . normalized screws with drilled heads . sizes and locations of drillings
铁路通用器材.带钻孔头的标准螺钉.钻孔的尺寸和位置 |
| 7. | Railway transport equipment . unbored axles with slotted and threaded ends . screws with drilled heads
铁路运输设备.带有槽端头和螺纹端头的未钻孔轴.带钻孔头的螺钉 |
| 8. | Comb drill head is applicable for clay and cemented glutinite with 6 - grade drillability . the compressive strength is no more than 4 of pull coefficient
梳齿钻头适合于粘土、胶结的砂砾岩层等，可钻性6级以下。抗压强度在普氏系数4 。 |
| 9. | Ball hob drill head is applicable for harden rock layer , fine grain granite , and it has below 9 - grade drillability . the compressive strength is no more than 15 of pull coefficient
球齿滚刀钻头适合于坚硬岩层，细晶花岗岩，可钻性9级以上，抗压强度在普氏系数15 。 |
| 10. | Wedge hob drill head is applicable for medium harden rock layer , coarse grain granite , and it has below 9 - grade drillability . the compressive strength is no more than 10 of pull coefficient
楔齿滚刀钻头适合于中硬岩层，粗晶花岗岩，可钻性9级以下，抗压强度在普氏系数10 。 |
