You could also apply pressure to the back of your head, just at the base of your skull.
你也可也在后脑上略施压力，就在头骨基部。
Remove the die base by unscrewing out of head.
通过旋开机头外的螺栓卸下模具底座。
To provide accurate reading of head pressure , the line should connect at the base of the water column.
为了提供精确的水头压力参数，管线应该连接到水柱的底部。
To provide accurate reading of head pressure , the line should connect at the base of the water column.
为了提供精确的水头压力参数，管线应该连接到水柱的底部。
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