查询词典 tortoise shell

Most of the crafts of earlier periods were based on portable, easily obtainable materials such as clay, stone, shell, and bone.

它需要一个安定，具专门技术，组织细密的社会基础。

It is a surprise that the rate constant of two closed shell molecules might be as fast as a radical reaction.

令人不能预期的是两个closed shell的分子，其速率常数可能像自由基反应一样快。

Chiefly terrestrial turtle of North America; shell can be closed tightly.

主要是陆栖的北美洲龟；其壳能够封闭得很严。

Shell had already closed 169,000 b/d of crude production after an attack last week.

自上周遭遇袭击之后，壳牌公司已关闭了日产量16.9万桶的生产设施。

All the alkali metals have a single s-electron outside a closed shell.

所有的碱金属都在闭合壳层之外有一单个S电子。

Fill the role of letter is to pump shell and closed the gap between the shaft from the water pump does not flow outside to not let outside air into the pump.

填料函的作用主要是为了封闭泵壳与泵轴之间的空隙，不让泵内的水流不流到外面来也不让外面的空气进入到泵内。

Fill the role of letter is to pump shell and closed the gap between the shaft, not pump the water does not flow to the outside to not let the outside air into the pump.

填料函的作用主要是为了封闭泵壳与泵轴之间的空隙，不让泵内的水流不流到外面来也不让外面的空气进入到泵内。

The lowest energy wavefunction is a singlet biradical instead of a closed shell singlet.

1最低能量波函数是单重态的双自由基而不是闭壳层的单重态。

The research indicates that the interior scattering sound field can be expressed as the summation of the interior scattering sound field of the closed shell and the external scattering sound field of these scatterers.

研究结果表明，该内部散射声场可表示为封闭薄壳的内部散射声场和这些内部散射体的外部散射声场之和的形式。

It is equipped with a vertical axle. There are three different types of this kind in which there is an open trough or a pressure trough or closed concrete worm - shell trough.

该机型均为立轴装置，有明槽，有压明槽和封闭三种型式，转轮结构一般为定桨。。。。。。

Objective:To compare the response control and attention of Schizophrenic patients with that of the healthy controls by Integrated Visual and Auditorycontinuous performance test. To quantitate the impairment of cognitive function in patients, and to explore the relationship between cognitive function and the severity of the disorder.

目的：探讨精神分裂症病人在IVA持续操作测试中的反应控制能力、注意力等，并与健康人进行比较，从而量化精神分裂症病人的认知功能损害，并进一步探讨其认知功能与疾病严重程度的关系。

Main effective factors including subcooling degree, mechanical vibration, gas hydrate reformation, environment temperature, noncondensing gas and surfactant are analyzed.

指出过冷度、机械振动、重复生成水合物、环境温度、不凝性气体、添加剂是影响气体水合物生成的主要因素，还对R152a水合物的放冷进行了实验研究。