vt.不充分供料(供料不足；下給；下部進(jìn)料)

A modified form of sprue gate is also used on underfeed moulds and runnerless moulds. 在點(diǎn)澆口形式的模具或無(wú)流道模具中也用到另一種形式主流道。

The grooved head of the sprue puller creates an effective undercut which is used to pull the sprue, or secondary sprues in underfeed designs. 主流道拉料桿頭部的凹槽形成了一個(gè)有效的底切，可以用來(lái)拉出主流道或者是下進(jìn)料設(shè)計(jì)中的二級(jí)主流道。

Based on the analyse of straw characteristics (i.e. bulk density, moisture and volatile matter), underfeed stoker and double combustion chambers are introduced in the designing of straw boiler. 通過(guò)對(duì)秸稈物料本身特性(堆積密度、含水率和揮發(fā)分)進(jìn)行分析,在秸稈鍋爐的設(shè)計(jì)中采用下飼式進(jìn)料方式和雙燃燒室結(jié)構(gòu)。

Central gating for this type of impression can, however, lead to complications in multi-impression moulds as either an underfeed mould(Chapter 12) or a hot runner mould (Chapter 13) will be required. 可是這類(lèi)型腔采用中心澆口可能要求使用一種點(diǎn)澆口。（第12章）或熱流道模具（第13章）使得多型腔模具的復(fù)雜性增加。