Pre-Vites with Iron Chewables 儿童复合维他命
steel pre-embedding iron 钢制予埋铁
cast iron pre ure pipe 铸铁压力管
liquid iron pre-treatments 铁水三脱预处理
iron ore pre-reduction 铁矿石预还原
pre-granulated iron concentrate 铁精矿预制粒
iron-ore pre-treatment facilities 铁矿石预处理设备
On one hand they are told to be agile, flexible, and adaptable, but on the other they are told to conform to pre-planned traditional Iron Triangle framework of scope, schedule, and cost.
一方面，人们告诉他们要敏捷、灵活、学会自我调整，另一方面，人们又告诉他们要遵从原有的传统铁三角框架，即范围、成本和日程。
The majority of the structural components produced by fixed die pressing are iron-based. The powders are elemental, pre-alloyed, or partially alloyed.
大多数用固定模压制的结构件都是铁基的。粉末可以是单一元素、预先合金或部分合金。
The melting materials used in the pre-treating and other previous procedures of the cast iron melting process were classified.
对铸铁生产流程中的预处理及其它各前置工序中所用的熔炼材料作了归类。
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