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刻度量筒
A cylindrical graduate

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三杆式天平
A type of balance to measure mass.

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密度
The state or quality of being dense.

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体积
The amount of 3-dimensional space occupied by an object.

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聚集的
A body of coherent matter, usually of indefinite shape and often ofconsiderable size:

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科学探究
Scientific inquiry refers to the diverse ways in which scientists study the natural world and propose explanations based on the evidence they gather

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观察
Observation is to use your 5 senses to gather informations

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国际单位制
Length (meter) and mass (kilogram) and time (second) and electric current (ampere) and temperature (kelvin) and amount of matter (mole) and luminous intensity (candela)

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核对实验
An experiment or trial that uses controls, usually separating thesubjects into one or more control groups and experimental groups.

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因变量
A variable in a logical or mathematical expression whose value depends in the independent variable.

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自变量
A variable (often denoted by x) whose variation does not depend on that of another.

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假定
A proposition made as a basis for reasoning, without any assumption of its truth.

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推理
When you explain or interpret your observations, you are making an inference.