两层的

An embryo at the stage following the blastula, consisting of a hollow, two-layered sac of ectoderm and endoderm surrounding an archenteron that communicates with the exterior through the blastopore.

原肠胚一种囊胚之后的胚胎，含有中空、两层的外胚层和内胚层，包围着通过胚孔跟外界交流的原肠

Settled within the centre of the site, the two storey house is designed to enhance the views to the two pyramidal oaks and catalpa tree in the front witha silver maple and Japanese maple at the back.

选址在场地中央，这所两层的房子着重加强了背面的景观设计，这两个锥体橡树和楸树在前面，一颗枫树和日本银枫树在后面。

Lanthanides belong to the sixth cycle of the periodic table Ⅲ B family, are all solid metal, they are La, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, holmium, erbium, thulium, ytterbium, and lutetium were 15 kinds of metals and their periphery are two layers of electronic 5d16s2, while the peripheral third layer f orbital but never zero to 14, so the external electronic structure of 4f0-145d16s2, and therefore these elements in oxidation number are to 3, very close chemical properties, extraction, when it is difficult to separate them they are mostly multi-element mineral mix, more difficult to increase refining, and their atomic number of 57-71, one by one to increase the number of protons the nucleus, and thus extranuclear electron of gravity is also growing, so that atomic radius decreases with increasing atomic number Z, which makes lanthanides contraction, ionic radius is also reduced, which also makes Zr, Hf, Nb and Ta, Mo and W, the atom and ionic radius very close to each other they also determine a similar nature, resulting in difficult separation, also the tribe Ⅷ of the fifth cycle, ruthenium, rhodium, palladium, and the sixth cycle, osmium, iridium, platinum is very similar in nature, thus The six elements, said platinum group elements.

镧系元素属于周期表第六周期中ⅢB族，全部是固体金属，它们是镧、铈、镨、钕、钷、钐、铕、钆、铽、镝、钬、铒、铥、镱和镥共十五种金属元素，它们的外围两层的电子均是5d16s2，而外围第三层的f轨道电子却从零增加到14个，所以外围电子结构为4f0－145d16s2，而使这些元素氧化数均为＋3，化学性质极为接近，提炼时很难分开，它们的矿石又大多是多种元素混在一起的，更增加提纯难度，它们的原子序数为57－71，核内质子数逐个增加，因而对核外电子引力也不断增强，使原子半径随原子序数Z增加而减小，这就使镧系元素收缩、离子半径也缩小，这也使得Zr和Hf，Nb和Ta、Mo和W等原子和离子半径都很接近、也决定了它们彼此性质类似，以致难以分离、也使第Ⅷ族中第五周期的钌、铑、钯和第六周期的锇、铱、铂在性质上极为相似，因而称这六个元素为铂系元素。

In this paper, we fabricate functional microgel capsules that consist of two miscible yet distinct layers.

本文装配了一种用两层的功能化微凝胶囊，这两层易于混合却能够分辨。

The flywheel composed of two-layer rotor is fabricated usually by extrusion of the inner rotor and the outer rotor together, so there is a predisplacement in the interface between the two layers.

因为两层转子结构飞轮一般是由内、外两层转子通过挤压组合而成，故在两层的接触面上就有初始位移。

The diffracting optical element includes two layers equal in the height of the relief pattern and opposite to each other in the direction in which the height of the relief pattern varies in a period, and another layer differing in the height of the relief pattern from the two layers.

衍射光学元件包括在凹凸模式的高度上相等并在凹凸模式的高度在一个周期内变化的方向上彼此相反的两层，以及凹凸模式的高度不同于所述两层的另一层。

A town house is a two-floor apartment.

城镇住房是两层的套房，厨房、起居室、餐室通常在一层，卧室在二层。

Last year, his family used the money to build a new, five-story concrete house to replace an old two-floor wood home.

以前全家人住在一座两层的木制房子里，去年，家里用他寄回去的钱盖了一幢五层水泥楼。

A town abode is a two-floor apartment.

城镇住房是两层的套房，厨房、起居室、餐厅通常在一层，卧室在二层。

You can see the difference between double-deck model and only one model with textures for eyeballs.

模特的眼球我倾向制作成2层，你可以看到一层和两层的明显区别所在。

As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸，那乌黑、忧郁的眼睛，她便会相信，他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失