lower valve是什么意思

网络释义

用法例句

Study on Heavy Metal Content in Oyster Shell and Its Relevance to Sea Water;

近岸海域贝壳与海水重金属含量的相关性研究

Study on the preparation of the calcium citrate from shells with once time calcination;

以贝壳为钙源一次煅烧法制取柠檬酸钙

Studies on the Desulfurization Kinetics of Shell Sorbent Using Thermogravimetric Analysis Method;

热重分析法研究贝壳固硫反应动力学

Methods for Morphometry and Analysis of Gastropod Shells;

腹足类贝壳特征的测量及分析方法

In this paper,calcination characteristics and desulfurization property of several kinds of shells are studied by using thermogravimetic analysis methods.

采用热分析方法对几种贝壳的煅烧特性和固硫特性进行实验研究 ,在理论分析和实验研究的基础上得到贝壳煅烧反应的动力学模型 ,并求出表观活化能 ,结果表明贝壳的表观活化能比石灰石小约 10 0kJ·mol-1。

There are different varieties of shells with different shapes, which are the basis to classify them.

贝壳种类繁多 ,形态各异 ,是贝类分类的主要依据 ,因来源不同贝壳的化学成分略有差别 ,主要有占全壳95 %的碳酸钙和少量的贝壳素 ,简述了贝壳在工艺品制造、养殖业和医药方面的应

The multilayer toughening conch nacre structure bio-inspired ballistic resistant composites which consisted of thin layer ceramic and resin matrix composites were prepared.

将薄层抗弹陶瓷材料与树脂基复合材料通过仿生结构设计制备了软、硬相交替叠合的多层增韧贝壳珍珠层结构仿生复合材料。

Betty sells shells on the back of a red shell.

贝蒂在红色贝壳的背面上卖贝壳。

White shell beads used as wampum.

白色贝壳串珠用作贝壳串珠的白色贝壳小珠

How Does the Sound of the Ocean Get Inside a Seashell?

到贝壳里“听海”？

The shells she sells are seashells, I'm sure.

我确定她卖的贝壳是海贝壳。

Having or forming a shell.

有贝壳的有或形成贝壳的

Wampum was made of seashells.

贝壳串珠是用海贝壳制作的。

Shells can be found everywhere on the beach.

海滩上的贝壳俯拾皆是。

and the roof was made of shells.

屋顶则是贝壳打造的。

For if she sells seashells on the seashore,

因为她在海边卖贝壳，

cook(eg oysters)in a scallop-shell

在扇贝壳里烤制（如牡蛎）.

The lobster is a shellfish.

龙虾是水生贝壳动物。

Look at this beautiful shell.

看看这个漂亮的贝壳。

My eyes lighted on a beautiful shell.

我偶然看到美丽的贝壳。

The seashore was covered with shells.

海滩上到处是贝壳。

catch fish or shellfish.

捕捉鱼或贝壳类动物。

And so with solids such as a shell,

对于其他实体，如贝壳、

Shellfish are good to eat.

水生贝壳类动物很好吃。

fossil bones, shells, etc

变成化石的骨、 贝壳等.