ERCP是“经内镜逆行胰胆管造影”的简称，是一种可以让你的外科医生检查你的胰管和胆管状况的一种技术。 内镜是一根很轻的，粗细像人的食指，柔软的可以弯曲的管子。
ERCP is a procedure that enables your surgeon to examine the pancreatic and bile ducts.
碳纳米管是由比人的头发细千倍的石墨板卷曲成的管状结构。
Carbon nanotubes are rolled-up sheets of graphite thousands of times thinner than a human hair.
碳纳米管是全碳原子组成的准一维管状纳米结构材料，有着十分奇特而丰富的物理性能。
Carbon nanotubes composed of carbon atoms can be considered approximately as one-dimensional systems with nanostructures, which have singular and abundant physical capabilities.
该鞘体包括管状结构，该管状结构具有侧壁(13)的外表面(12)以及由该侧壁的内表面(16)围成的管腔(14)。
The sheath comprises a tubular structure having an exterior surface (12) of a sidewall (13) and a lumen (14) enclosed by an interior surface (16) of the sidewall.
然后进进脱管机，在那里3米长的管状坯料被加工成28米长的管子。
Then there goes extracting mill that turns 3-meter long tubular billets into 28-meter pipes.
然后进进脱管机，在那里3米长的管状坯料被加工成28米长的管子。
Then there goes extracting mill that turns 3-meter long tubular billets into 28-meter pipes.
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