Swift Keels 轻量龙骨
Keels Red Ciliate 龙骨红纤毛虫
Palea Keels Ciliate 内稃龙骨纤毛
Keels Sparsely Ciliate 龙骨疏生缘毛
Keels Ciliate Near Apex 龙骨纤毛近先端
lateral stiffness of steel keels 轻钢龙骨侧向刚度
The experimental research of the formwork, keel and structure are carried out separately.
分别对模网、龙骨及结构体进行实验研究。
参考来源 - 新型组合结构保温板的研制·2,447,543篇论文数据，部分数据来源于NoteExpress
以上来源于: WordNet
N-COUNT The keel of a boat is the long, specially shaped piece of wood or steel along the bottom of it. (船的) 龙骨
The keel hit the rock first.
船龙骨先撞到岩石。
N red ochre stain used for marking sheep, timber, etc (用于标记羊、木材等的)红印色
PHRASE If you say that someone or something is on an even keel, you mean that they are working or progressing smoothly and steadily, without any sudden changes. 平稳地
Jason had helped him out with a series of loans, until he could get back on an even keel.
詹森给他提供了一连串贷款帮他摆脱困境，直到他能够重新稳定下来。
As only a very general rule, most sailboats over 20-something feet have fixed keels.
作为一条通常规律，大部分20英尺以上的帆船使用固定龙骨。
Sailboats have many different types of fixed keels, such as full keels (see photo) and fin keels.
帆船有许多种不同类型的固定龙骨，例如全龙骨(见上图)及鳍板。
If you are shopping for a sailboat in this range, you should understand the differences between these fundamental types of keels.
若你是在这个尺寸范围内寻购帆船，那你应该学习了解一下龙骨的这些基本类型之间的差别。
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