【单选题】内皮细胞间隙大,有窗孔,主要分布于肝、脾和骨髓等处是指
【判断题】Gating system is the network of channels used to deliver molten metal to the mold cavity.
【单选题】Gating system is the network of channels used to —— molten metal to the mold cavity.
【简答题】显示器的种类很多,最常见的是_______________________和 __________________两种,其英文简称分别是____________、 ___________。
【单选题】Gating system is the network of channels used to molten metal to the mold cavity.
【单选题】The cope is then ( ) to the drag, and the sand is poured on the cope half, covering the pattern, core and the gating system.
【单选题】The vertical part of the gating system connected to the pouring cup is the ( ).
【简答题】Gating system is the network of channels used to molten metal to the mold cavity.
【简答题】The molten material is poured into the pouring cup, which is part of the gating system that supplies the molten material to the mold cavity.