neck-down core

机械英汉词典（N-3）-机械资讯-马棚网 ... neck-down 缩颈，局部缩细成颈状 neck-down core 易割冒口片 neck-down riser 易 …

core-英汉词典-英中字典-速译通-解释意思... ... neck down core [机]缩颈砂心 neck-down core 颈缩芯片 no-bake core 自硬砂芯 ...