shell expansion indicator 汽缸膨胀指示器
shell expansion recorder 外壳膨胀记录器
Shell-expansion plan program 外板展开图程序
expansion shell type heater 膨胀壳式加热器
expansion shell rock bolt 胀壳式张拉锚杆
wedge-nut expansion shell bolt 楔胀式锚栓
dry-expansion shell-tub type evaporator 干式膨胀壳管型蒸发器
Always be careful with shell expansion and variable names.
始终要谨慎使用Shell扩展和变量名称。
It's a good idea to get into the habit of using single quotes to surround your sed commands, so that shell expansion is disabled.
养成使用单引号来括起sed命令的习惯是个好注意，这样可以禁用shell扩展。
A command between back ticks runs as the shell interprets the command line, and the output of the command is used in the final expansion.
在Shell对命令行进行解释时，将执行反勾号之间的命令，并在最终的扩展结果中使用该命令的输出。
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