Effects of source box, vacuumshell, dead layer and P-type wick in the calculation are considered in detail.
计算中仔细考虑了源盒、真空壳、死层及P型芯等的影响。
2
Some metallic parts are successfully fabricated using a vacuum pressure difference casting technology and a casting mould shell technology.
通过采用真空压差铸造工艺，结合铸造型壳的制造，成功制造出金属零件。
3
Sprinkler pump shell cracks, or impeller, leaf damage, or seal damage, will affect the degree of vacuum, water pumping, water pressure is too small or the phenomenon.