Freshwater turtle of Chesapeake bay tributaries having red markings on the lower shell.
产于切萨皮克海湾的淡水龟,下面的壳上有红色的斑点。
It is fixed at exit section of the shell to reduce whirling current and thus reduce compact on the performance of instruments of lower reaches.
固定在壳体出口段,其作用是消除旋涡流,以减小对下游仪表性能的影响。
Shell is committed to delivering solutions to customers that lower operating costs, deliver value and improve the business environment.
壳牌集团致力于向客户提供有助于降低运营成本的解决方案,为客户提供价值,改善客户的业务环境。
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