He holds that there are four different causes-material cause, motivation cause, form cause and objective cause.
他认为，有四个不同的原因，即质料因、动力因、形式因和目的因。
Of things: The material cause or instrumentality whereby effects are produced; but implying a rational employer or contriver.
指物：借以产生效果的质料因或物质手段；但暗示着理性的使用者或发明者。
The defects of casting technology and the impurities in copper alloy material cause roughness of faucet surface with large amounts of sand holes.
铸造技术不完善、铜合金原料中的杂质致使水龙头零件表面疏松，并有大量砂眼。
The defects of casting technology and the impurities in copper alloy material cause roughness of faucet surface with large amounts of sand holes.
铸造技术不完善、铜合金原料中的杂质致使水龙头零件表面疏松，并有大量砂眼。
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