外科大夫用塑料管(俗称套管)把心肺机与患者连接起来。
The surgeon connects the plastic tubes (known as cannulae) from the heart-lung machine to the patient.
这个标准涵盖塑料美国锥管螺纹(NPT)的尺寸和计量方法，用于泄漏密封连接，现在已在所有有关塑料管道产品的ASTM标准中引用。
The standard covers dimensions and gaging of plastic tapered National Pipe Threads (NPT) for leak-tight joints, and it is now referenced in all ASTM Standards for plastic piping products.
外科大夫用塑料管俗称套管把心肺机与患者连接起来。
The surgeon connects the plastic tubes known as cannulae from the heart-lung machine to the patient.
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