A local circular support block is positioned on the centre-line of the mould and machined to accommodate the rear end of the, sprue bush (Figure 3.69).是什么意思_A local circular support block is positioned on the centre-line of the mould and machined to accommodate the rear end of the, sprue bush (Figure 3.69).在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句