纲

The individual strands are flared in three directions.

各根纲缆向三个方向张开.

The cable stays converge to a single point on the apex of the tower.

纲索在塔架顶部集中在一点.

Take grain as the key link, develop a diversified economy and ensure an all-round development.

以粮为纲, 多种经营, 全面 发展.

These crustaceans provide a valuable food source for some fish.

这些甲壳纲动物是某些鱼类重要的食物来源.

The two forces acting on the bucket are the weight and the tension of the cable.

加在这吊桶的力为重量和纲缆的张力.

Spiders are not insects; they are arachnids.

蜘蛛不是昆虫, 它们是蜘蛛纲动物.

Dimensionless quantities in physics are those that require no unit.

物理学中无量纲的量就是不需要单位的量.

Arachnids have four pairs of legs but only two body parts.

蜘蛛纲动物有四对腿还有两个身体部分.

Dancing on a rope is an acrobatic feat.

在纲丝绳上跳舞是一种特技

Oceanic islands are sometimes deficient in animals of certain whole classes.

海洋岛屿上有时缺少某整纲所有的动物.

Most marine gastropod mollusks develop a ciliate swimming organ in certain larval stages.

大多数海洋腹足纲软体动物在某些幼体阶段形成一种有纤毛的游泳器官。

Distinct layers are often visible in thick-walled resting cells such as chlamydospores or zygotes of Phycomycetes.

在厚壁休眠细胞如藻菌纲的厚孢子或接合子中明显的几层是常常能看见的.

We should note that the elements of a flexibility matrix are not necessarily dimensionally homogeneous.

我们应该注意柔度矩阵中的诸元素不一定是量纲完全一样.

That's not a matter of principle.

这个问题上不了纲.

Often mistaken for insects, spiders actually belong to a different classification of creatures, called arachnids.

蜘蛛往往被误认为昆虫, 其实它们属于一种不同类型的生物, 称为蜘蛛纲的动物.