v-drill 中文意思是什麼
-
Diamond core drill can be laser welded with full penetration and the bonding strength is 1500 n / mm2. dendrite morphology and porosity formed in the welds of al - fe - v - si aluminum alloy
用本激光器對金剛石薄壁鉆進行焊接，可以將其完全焊透，抗彎強度為1500n / mm ~ 2 。 -
Many bore holes in shuangwangcheng reservoir which lies in the sedimentary area are drilled and lots of terra drill data are collected. five typical sections, i. e. section i ? i, ii ? i, iii ? ii, iv ? v ' and v ? v are drawn. the vertical sedimentary sequence of this sedimentary area is divided cbmbining the granularity features of sediments
課題組與山東省水利勘測設計院合作，對湖區內的雙王城水庫進行了鉆探研究，搜集了大量的地質鉆孔資料，經沉積物巖性特徵分析，繪制出雙王城水庫外圍1km處圍繞水庫的5個典型剖面（即剖面? 』 、 ? 』 、 ? 』 、一』和? 』 ）的剖面圖，結合沉積物粒度特徵，劃分出該沉積區的垂向沉積序列。
分享友人