查询词典 bivalve

The strata in this section cover three lithostratigraphic units, seven conodont zones, five ammonoid zones and three bivalve zones. Two normal and two reversed magnetic polarity zones as well as the cyclic sequences corresponding to the Milankovitch climate periods driven by the Earth's orbit are well recognized in the lower part of the section.

该剖面包括3个岩石地层单元、7个牙形石带、5个菊石带、3个双壳类带；在剖面下段地层中识别出2个正向磁性带和2个反向磁极性带；与地球轨道天文周期相对应的Milankovitch气候沉积旋回也可以明确地辨认；碳氧同位素δ13C演变呈现两次大的旋回。

Bivalve culture is one of most widely practiced mariculture.in China.

贝类养殖是我国海水养殖业中最重要的组成部分之一。

This allowed them to follow 431 "lineages" of marine bivalve through the course of geological time.

这样，他们便可以沿着地质学的时间轴逐个研究431支海洋双壳类的"世系"。

They called him a bivalve and ran quickly away.

他们叫他软体动物，然后快速跑开

But did you ever notice anyone try to open the terrestrial bivalve with a typewriter?

但是，你可曾听说过有人试图用打字机来剖开陆生的壳类动物吗？

Both halves of this delicate bivalve are exactly matched.

这种精美的双壳贝的两扇完全对称。

When the Thompson quadruplets espied him one day,they called him a bivalve and ran quickly away.

有一天，汤普森家的四胞胎看见他，"双壳贝！"

The aim of the research was to discuss the cluster analysis of chromosomes so as to classify bivalve in the cell level.

［目的］探讨利用染色体参数进行聚类分析，以期在细胞水平上对双壳贝类进行分类。

Use 3 pins for each bivalve sample, and a yellow pin only for bivalve 2, in the following way

每种双壳贝样本用三支相同颜色的大头针标示，黄色的大头针仅用於标示样本2，方式如下

At pearl island hatcheries, pearls are cultured from bivalve mollusks, Pinctada maxima and Pinctada mertensii.

在珍珠的繁殖地，珍珠品种有 bivalve mollusks， Pinctada maxima 和 Pinctada mertensii。

It is also known as one of the most poisonous naturally occurring substances.

它也被称为一个最自然发生的有毒物质。

The greatest stress is found at the location on the cross section where V is the largest.

最大应力出现在横截面上V为最大的地方。