聚合MDI是制造聚氨酯硬质和半硬质泡沫材料的主要原料。
Polymetric MDI is important material to make polyurethane horniness and semi-horniness foam.
广泛应用于高回弹冷熟化，微孔弹性体及半硬质聚氨酯泡沫塑料制品。
They are widely used in high elastic resilient cold cure, microporous elastomer and semi-rigid polyurethane foam plastics.
研究了阻燃剂、阻燃增塑剂及填料加入量对提高PVC半硬质塑料地板阻燃性的影响。
Study was made of the effects of admixing amount of fire retardant, fire retardant Plasticizer and filler on improvement on fire retardation of semirigid PVC floor tile.
搅拌凝块法是一种半硬质干酪的制造方法，通过研究实践介绍搅拌凝块干酪的加工工艺及其操作要点。
Stirred curd method is used for production of semi-hard type cheese. The technology and its operation key points are introduced with experimental practice in this paper.
装于贱金属、硬质合金或金属陶瓷底座上的宝石或半宝石（天然、合成或再造）；
Precious or semi-precious stones (natural, synthetic or reconstructed )on a support of base metal, metal car-bide or cermet;
装于贱金属、硬质合金或金属陶瓷底座上的宝石或半宝石（天然、合成或再造）；
Precious or semi-precious stones (natural, synthetic or reconstructed )on a support of base metal, metal car-bide or cermet;
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