enlarge hole 中文意思是什麼

enlarge hole 解釋
擴孔
  • enlarge : vt 1 擴大，擴展，擴充；增大；【攝影】放大。2 〈美國〉〈古語〉釋放。 enlarge one s views by readin...
  • hole : n 1 洞，穴，孔；（衣服等上的）破洞；傷口；漏洞；窩，坑；水流的深凹處，（河道的）緩流窪。2 （獸的...
  1. However, there are many troubles in constructing in gravel, such as drilling difficult, hole collapsing and drill losing, which will lead to enlarge or shrink pile ' s diameter, form fault pile, delay the time, increase the use of material and higher the investment

    但灌注樁在卵石層中施工或穿越卵石層會遇到鉆進困難、孔壁易塌、掉鉆卡鉆等諸多問題，造成擴徑、縮徑、斷樁等病害，使工期延長，材料用量增加，費用增高。
  2. Abstract : in order to enhance the ability of two types of enlarger which isused to enlarge the hole under oil layer casing, their structure, material and machining technology were improved. the result and technical index have been proved satisfactory by site application

    文摘:為了提高油層套管下面擴孔用的三牙輪及同步式2種擴孔器的擴孔能力，對它們的本身結構、材料及製造工藝等做了改進，研製了功能更好的擴孔器，經現場實際使用達到了滿意的效果，技術指標達到設計要求。
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