船只未发现携带钉螺。

Boats were not found to carry snails.

youdao

在硬化斗渠中仅查出1只感染性钉螺。

Only 1 infected snail was found in a cement Dou ditch.

youdao

目的观察槟榔提取物杀灭钉螺的效果。

The Disinfectant Effect of a Plant Extraction;

youdao

螺钉螺帽永远不会合适。

A screw will never fit a nut.

youdao

目的了解人工灌区钉螺扩散与水位之间关系。

Objective To learn the relationship between snail spreading and water level in man-made irrigation area.

youdao

目的了解人工灌区钉螺扩散与水位之间关系。

Objective To learn the relationship between snail spreading and water level in man-made irrigation area.

youdao