rock core

基本解釋

Saturn is the most inside rock core , its diameter is 2 million meters.
土星最里面是巖石核心，其直徑有2萬(wàn)千米。
The optional borehole of small diameter in core drilling to extract rock core hydraulically is a new technique developed in recent years.
小口徑水力取芯鉆探是近年來(lái)推出的一項(xiàng)新技術(shù)，具有勞動(dòng)強(qiáng)度低、巖芯采取率高和鉆頭壽命長(zhǎng)的特點(diǎn)。
After establishing a steady flow in the rock core, the pump was stopped, the pressure decrease at the closed end of the rock core was recorded.
巖心中形成穩(wěn)定滲流后，關(guān)閉驅(qū)替泵，測(cè)量巖心封閉端的壓力衰減曲線。

France is considered a rock solid, core member of the euro zone, and its troubles are of great concern.
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