有时在施工程只需一台大吨位的塔机即可完成。
Sometimes can be completed in a tower crane construction large tonnage.
适用于多层材料和大吨位的下料，规格品种齐全，并可定做。
Suitable for laying-off multi-layer material and large materials in huge weight, complete specifications and models, custom-made too.
大吨位的熔制，过热现象是普遍存在的，但不会形成大量粒硅镁石。
In large scale melting pro-ess, superheating often occurs, but chondrodite forms only in a small quantity.
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