gravel hammer 中文意思是什麼

gravel hammer 解釋
碎石錘
  • gravel : n 1 〈集合詞〉砂礫，礫石。2 【地質學；地理學】砂石，礫。 gravel bed 礫層。3 【醫學】尿砂。vt （〈...
  • hammer : n 1 槌，鐵錘，榔頭。2 【機械工程】唇錘，杵錘。3 （會議主席或拍賣人用的）小木槌。4 槌狀物，（電鈴...
  1. He was deeply impressed to see the workers breaking large bars out of steep walls of rock and filling the valley with thunder. greywacke becoming gravel through massive hammer strokes

    當時，工人們震天動地從巖壁上取下巨石以及用錘把硬砂巖敲打成碎石的情景給他留下深刻的印象。
  2. Under the function of big pressure and dynamic load, the grains may be moved which may cause the soil body distortion. at present, the relatively ripe methods of drill in gravel layer are mostly double - wall drill pipe reverse circulation drilling, auger stem breast wall drilling and down - the - hole hammer follow down drilling

    論文根據jsl ? 30型礫石鉆機潛孔錘同心跟管鉆具結構，採用程序計算得到了鉆桿內各深度處壓力分佈、鉆頭壓力降、環形空間壓力分佈及空氣流速分佈。
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