网络释义专业释义
要制造时光机，必须要有一种具备负密度(negative density)的物质，不过因为目前这种物质不存在，也无法确定自然定律是否能让这类物质大量存在，所以也不可能制造时光机器。
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negative density- dependent factor 负密度依变因子
negative density detail 负片密度 ; 负密度
negative density difference 负密度差
Negative Density Energy 负密度能量
negative density gradient 负密度梯度
negative charge density 负电荷密度
When Negative Facial Density 当逆面部密度
surface negative charge density 膜表面负电荷密度
双语例句原声例句权威例句
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The blending volume of negative density difference displacement is much less than that of the positive density difference displacement.
负密度差顶替时掺混量比正密度差顶替小。
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So for example, that might have a formal charge of negative 1, because to some extent it has gained that much electron density that it now has a formal charge that's negative.
比如，可能它的形式电荷为负一，因为在一定程度上它得到了这么多的共用电子密度，那么它现在就有了负的形式电荷。
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These negative qualities hinders its use because it results in high transport costs, difficulty in handling and storage, as well as low energy density.
这些负面性质阻碍其使用，导致高运输成本，处理和储存困难以及低能量密度。
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So for example, that might have a formal charge of negative 1, because to some extent it has gained that much electron density that it now has a formal charge that's negative.
比如，可能它的形式电荷为负一，因为在一定程度上它得到了这么多的共用电子密度,那么它现在就有了负的形式电荷。
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