Ada Dugaan Kolusi Tender Proyek Revitalisasi TIM di Era Anies, Pemprov DKI: Nanti Dicek
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Menuju Corporate University, Kemenag Kirim Widyaiswara Pelatihan Bahasa Inggris
Hand holding pencil erasing an employee. Dismissal or bankrumptcy concept. Vector illustration.
Hand holding pencil erasing an employee. Dismissal or bankrumptcy concept. Vector illustration.
Hand holding pencil erasing an employee. Dismissal or bankrumptcy concept. Vector illustration.
Hand holding pencil erasing an employee. Dismissal or bankrumptcy concept. Vector illustration.
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精密铸造有三种制作工艺,硅熔胶工艺、复合工艺、水玻璃工艺。机械化、自动化的进展打破熔模铸造工...。精密铸造复合型壳工艺,是近几年来刚刚开发的一种新工艺,型壳及铸件的表面质量有较大的提高,表面层采用了硅溶胶制壳工艺,加固层和保护层采用水玻璃制壳工艺,使生产成本大大降低,既降低了制造成本又提高了工艺度 ,硬化液采用了结晶铝做硬化液,替代了老式用氨做硬化剂,既保正了型壳的耐高温强度,还改变了污淹环镜,
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