胆管癌不产生胆汁，但这些细胞生成粘蛋白，并很难与活检或针吸标本的转移性腺癌相区分。
Cholangiocarcinomas do not make bile, but the cells do make mucin, and they can be almost impossible to distinguish from metastatic adenocarcinoma on biopsy or fine needle aspirate.
涂布白纸板吸塑包装的目标是在撕开吸塑包装物时， 塑料膜片在纸层厚度的1/2— 1/3处将纸层纤维粘起。
The objective for blister package is that fiber layer tears at the position of 1/3 to 1/2 in Z direction when blister is removed.
根据气体动力学原理，对纺粘法非织造工艺中负压拉伸的下吸风装置进行了理论研究，并通过计算风道流场中的各参数，改造下吸风装置。
The spunbond suction drawing system was studied according to the gas-dynamic theory, and it was modified by calculating various air current parameters of the drawing system.
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