preformsn. 焊料预成型(preform复数); v. 预先形成(preform的第三人称单数);
preformingv. 预先形成;预制(preform 的现在分词)
preform binder预成型粘合剂
网络短语:
preformed nutrients 原存营养盐
preformed coil 成型线圈
Hole preformed 预留孔穴
preformed joint 预制缝; 预塑缝;
preformed precipitate 预沉淀;预先形成的沉淀物
preformed lockplate 预成形锁片;预成形保险片
non preformed 不预先成形的
preformed stemming 预制成型炮泥
英语例句库
Dacryocystography was preformed in all patients before operation to confirm the obstructive sity and the size of lacrimal sac. 术前造影以了解泪囊的大小和阻塞的部位,以选择最佳手术适应证。
When installation, unlade the join copper bus bar, through the preformed long-square hole, fixing it on the main grounding bus bar. 安装时将互连铜排卸下,穿越柜间预留的长方孔,固定在相邻两柜的主接地铜排上。