每个期货市场都有自己的合约规范，其中详细说明了市场参数，如，符号，价格变动单位等。

Each futures market has its own contract specifications, which detail the market parameters, such as the symbol, and the tick size.

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通常，s(p)表示单位价格p变动时供给量的变动，而供给弹性表示为h（来自古希腊字幕的第七个，因为第五个已经被选）。

Formally, if s(p)gives the quantity supplied for each price p, the elasticity of supply, denoted h (the Greek letter “eta”, chosen because epsilon was already taken) is

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通常，s(p)表示单位价格p变动时供给量的变动，而供给弹性表示为h（来自古希腊字幕的第七个，因为第五个已经被选）。

Formally, if s(p)gives the quantity supplied for each price p, the elasticity of supply, denoted h (the Greek letter “eta”, chosen because epsilon was already taken) is

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