Die inserts, together with the cores which form recesses, must endure the effects of temperature and injection pressure of the molten metal. 與形式隱藏，必須忍受溫度和熔融金屬的射入壓力的作用的核心一起死插入物。
This negative pressure phase is of short duration. 負壓周期的延續時間很短。
Special designs effective for low intake pressure or suction-side applications. 具有在低入口壓力或負壓情況下應用的特殊設計。
Other advantages of the propellent with a negative pressure exponent were also presented. 還指出了負壓力指數推進劑的其它優點。
