The utility model belongs to a fitting of an internal combustion engine filter, in particular to a novel spin-on filter casing capable of easily loading and unloading.
本实用新型属于一种内燃机滤清器配件，新型易装卸旋装滤清器外壳。
The external non liner loading of well casing can be improved by changing elastic parameters of the cement mantle.
水泥环的弹性参数和泥岩含水量等对套管外载有一定影响。
The external non liner loading of well casing can be improved by changing elastic parameters of the cement mantle.
水泥环的弹性参数和泥岩含水量等对套管外载有一定影响。
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