Located at an arid area in the middle of Guansu Province, Dashuitou Coal Mine shares a poor natural condition.
大水头煤矿区地处甘肃中部的干旱山区，自然条件很差。
Sichuan Basin is characterized by special architecture, complicated reservoir forming condition, rich natural gas and poor oil resources.
四川盆地结构特殊、成藏条件复杂、气多油少。
The conveying cause of natural food material cannot develop into solid-bed and melting-poor condition.
高分子物料在挤出加工过程中，难以形成明显的固体床和熔池。
The conveying cause of natural food material cannot develop into solid-bed and melting-poor condition.
高分子物料在挤出加工过程中，难以形成明显的固体床和熔池。
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