综合评价了小型液压阀体铸件型芯的芯砂材料，介绍了覆膜砂热芯盒设计特点以及覆膜砂制芯设备等。
Sand mixtures of cores for small hydraulic valves casting were reviewed. Design of hot boxes and equipments for production of coated sand cores were described.
计算中仔细考虑了源盒、真空壳、死层及P型芯等的影响。
Effects of source box, vacuum shell, dead layer and P-type wick in the calculation are considered in detail.
一种加长型插芯门锁，包括锁盖、与锁盖连接固定的短面板、内外面板、锁扣板以及锁扣盒。
Disclosed is a lengthened mortise door lock which comprises a lock cover, a short panel fixedly connected with the lock cover, an inner panel, an outer panel, a locking plate and a locking box.
一种加长型插芯门锁，包括锁盖、与锁盖连接固定的短面板、内外面板、锁扣板以及锁扣盒。
Disclosed is a lengthened mortise door lock which comprises a lock cover, a short panel fixedly connected with the lock cover, an inner panel, an outer panel, a locking plate and a locking box.
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