安慰剂效应是指一个没有治疗效果的物质，但如果你相信它有，就会起到一定的作用。
The Placebo effect is when an ineffectual substance that is believed to have healing properties produces the desired effect.
指具有一定地球物理效应的区域或空间。如地球内外存在的重力场、地磁场、地电场、地热场、地应力场等。
Geophysical field - Domains or Spaces contain certain geophysical effect, such as gravitational field, geomagnetic field, geothermal field etc.
混凝土强度的尺寸效应是指混凝土的强度不仅由材料的性质决定，还会随着试件或构件的尺寸的大小而变化，而不是一个定值。
The size effect of concrete strength is affected not only by the property of the material, but also by the size of specimen, which is not a constant value.
混凝土强度的尺寸效应是指混凝土的强度不仅由材料的性质决定，还会随着试件或构件的尺寸的大小而变化，而不是一个定值。
The size effect of concrete strength is affected not only by the property of the material, but also by the size of specimen, which is not a constant value.
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