Rate of penetration
[经] 钻井速度, 机械钻速
🧩 词语组成解析
rate
[reit]
n. 速度;比率;等级;（利息等的）费率;
vt. 估价;值得;责骂;定级;
vt.& vi. 认为，把…算作;
vi. 被评价;被认为;被列入;申斥;
of
[əv]
prep. 关于;属于…的;由…制成;
aux. 助动词 [非标准用语、方言] =have [主用于虚拟语气];
penetration
[,pɛnɪ'treʃən]
n. 渗透;穿透;[军]突破;洞察力;
🗣️ 情景例句
The gap between the poor and the rich seems to be growing every day.
贫富悬殊好像与日俱增。
We can't make a decision without thinking it over.
我们不能不考虑，就作决定。
Yet a great many processes depending on such research are sought for with complete secrecy until the stage at which patents can be taken out.
然而，依赖这种研究的很多工艺程序是在完全保密的情况下进行的，直到可以取得专利权的阶段为止。