为了减少散热，在活塞顶、缸盖喷涂了氧化镐涂层，同时在副燃室设计了空气缝隙。
The oxide-coated zirconium of the chambers at the piston and cylinder head, the design of air gap on the auxiliary chamber are applied to lower heat rejection.
WR 9138可以直接喷涂在皮革上，也可用于底涂、顶涂及水性光亮剂等配方中，防水能力与其使用量成比例。
WR 9138 is used in the finishing after it is diluted with water. It can give good water-proof properties.
WR 9138可以直接喷涂在皮革上，也可用于底涂、顶涂及水性光亮剂等配方中，防水能力与其使用量成比例。
WR 9138 is used in the finishing after it is diluted with water. It can give good water-proof properties.
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