砍伐密闭型热带雨林可导致每天丧失多达100个物种。

Deforestation of closed tropical rainforests could account for the loss of as.

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叙述了电极壳的制作和对接对密闭型电石炉正常运行的重要性。

Importance of electrode shell making and jointing to sealed calcium carbide furnace is introduced.

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防水：材质为PEVA橡塑密闭型气泡结构，每个气室处于封闭状态。

Waterproof: for PEVA rubber material closed type air bubble structure, each of the gas chamber in close condition.

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