preformed

过去式：

动词过去式: preformed

更多词形：

动词过去式: preformed | 动词过去分词: preformed | 动词现在分词: preforming | 动词第三人称单数: preforms |

单词例句：

The colorimetric methods involve the bleaching of a preformed color by the fluoride ion .

比色法涉及氟离子对预先形成的颜色的消色作用。

In this short time, our troops have preformed brilliantly, with skill and with bravery.

在短中时间,我们的军队有辉煌地预先形成,由于技术和勇敢。

Viral isolation was preformed in MDCK cells and hemagglutination inhibition assay was used for subtype identification.

用MDCK细胞进行病毒分离，用血凝抑制试验对分离到的病毒标本进行分型鉴定。

Condensate will leave marks on the preform surface.

露水会遗留痕迹在瓶坯的表面上。

There will be a sprue at the bottom of the preform of no more than 5 mm.

瓶坯底会留有不超过5mm长的水口

The colorimetric methods involve the bleaching of a preformed color by the fluoride ion.

比色法涉及氟离子对预先形成的颜色的消色作用。

This is also preformed on covered surfaces in a stacked assembly: substrate - pre-form -die.

在叠层的组装工艺中，比如基板-焊片-芯片，即使有部分表面被盖住了，这种气氛同样有效。

The captioned goods are urgently needed, so we wish to receive your preformed invoice by return.

我们急需标题所提到的商品，因此希望尽快收到贵方的形式发票。

An 8-cavity preform mould costs more than the injection moulding machine that holds it.

八腔以上的模具价钱比注塑机还要高。