求翻译：ABS工程塑料一般是不透明的，外观呈浅象牙色、无毒、无味，兼有韧、硬、刚的特性，燃烧缓慢，火焰呈黄色，有黑烟，燃烧后塑料软化、烧焦，发出特殊的肉桂气味，但无熔融滴落现象。是什么意思？

abs engineering plastics is generally opaque, pale ivory appearance, non-toxic, tasteless, both tough and hard, just the features, slow burning, yellow flames, black smoke and burning plastic softening, charred special issue cinnamic odor, but no molten drip phenomenon.

ABS engineering plastics are generally opaque, is a pale ivory-colored, non-toxic, odorless, and has a tough, hard, just the features that Burns slowly, flame is yellow, and black smoke, burning plastic softening, burned, special cinnamon smell, but not molten droplets.

The ABS engineering plastics is generally not opaque, the outward appearance assumes the shallow ivory, non-toxic, tasteless, had at the same time strongly, hard, the just characteristic, burning is slow, the flame assumed the yellow, had the black smoke, after burning the plastic softens, the air b

ABS engineering plastics are generally opaque, appearance is light ivory color, non-toxic, tasteless, characteristics of both hard and tough and rigid, slow burning, the flame is yellow, with black smoke, burning plastic after softening, burning, issuing special cinnamon smell, but the phenomenon of