中子寿命测井是测量（）被地层元素俘获释放伽马射线。

The（）enables water to be blow down or emptied from the boilerIt may be used when partially or completely emptying the boiler.

地面电极线用于电法测井和（）测井。

三孔隙度测井包括中子孔隙度，声波时差测井和密度测井。

地球物理测井也叫油矿地球或（）地球物理测井，简称测井。

双侧向测井仪，深侧向A1与A2电极之间被认为（）；浅测井向测井A1与A2之间被认为（）。

放射性测井方法可分为两大类，一类是（）测井，另一类是（）测井。

Although the Shipowner may be responsible for the loss or damage to the goods，his liability may be limited（）the terms of the contract or the statute.

Vessels must be（）valid certificate of nationality or certificated of registry or license.

Effects which are dutiable or subject to prohibitions or restrictions should be declared in （）.

（）are liable to be stoten, pilfered or may damaged due to improper handing or stowage.

钋铍中子源，半衰期为（）天。