For example we can require that prices be above a specified moving average in order to initiate buy signals and below that same moving average to generate signals to sell short.
例如，在产生买入信号前我们要求价格必须在某一移动平均线之上，在产生卖空信号前我们要求价格必须在某一移动平均线之下。
Margin money deposited into a stock account in order to borrow money to purchase or sell short securities.
保证金存在股票账户上用来借钱买卖短期证券的资金。
Margin money deposited into a stock account in order to borrow money to purchase or sell short securities.
超额保证金在长期或短期账户中，超过法定保证金维持范围的股票账户净值。
Margin money deposited into a stock account in order to borrow money to purchase or sell short securities.
超额保证金在长期或短期账户中，超过法定保证金维持范围的股票账户净值。
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