The single shell type slow windlass shall be utilized for the steel strands.
钢绞线束使用单筒慢速卷杨机穿设。
To enable command history in Z shell, type.
要在ZShell中启用命令历史，可以输入。
To see which environment variables are set in your shell, type printenv.
要查看您的shell中设置了哪些环境变量，键入printenv命令。
To see which environment variables are set in your shell, type printenv.
要查看您的shell中设置了哪些环境变量，键入printenv命令。
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