此拔叉零件的结构较为复杂，其加工的地方主要是孔和平面。
This pull out the construction of the fork spare parts than for complicacy, its the place that process is a peaceful in bore primarily.
根据气体状态方程和平衡方程，推导出在某点真空表反映的真空度值与孔压计反映的孔压差的理论关系式。
The theoretical formula about vacuity in vacuum tube and pore-water pressure at the observation point was obtained in this paper by using equation of gas state and equilibrium equation.
关于中美洲和平与合作的孔塔多拉文件附加议定书；
Additional protocol to the contadora act on peace and cooperation in central america ;
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