两层的

By organizing data block partition, two layer nested bintree were built.

在数据分块组织的基础上构建了层嵌套二。

Two cell layers (diploblastic) separated by a gelatinous mesoglea.

层细胞(胚层)，中间是凝胶状的中胶层。

Millions of families have climbed a bracket or two.

数百万家庭的收入已提高了一层。

A symmetrical ferromagnetic bilayer film is investigated under the nonperiodic boundary condition and considering anisotropic field at two surfaces,by using the rescaling interface approach.

在非周期性边界条件和在考虑表面各向异性的情况下,应用界面重参数化方法精确求解了层对称铁磁薄中的低能自旋波本征问题。

It is found the suprasternal space should be enclosed by the superficial layer of the deep cervical fasciae and the fasciae of the infrahyoid muscles, rather than the past opinion of the textbook.

得出胸骨上间隙应是由颈深层和舌骨下肌围成，而不同于以往教科书中描述的由颈深层分为层附着于胸骨形成。