这些毛蚴进体螺体，繁殖和发育对人类有传染性的尾蚴。
These organisms penetrate into snails, multiply, and develop into cercariae, the infective form for man.
本文以非线性连续体几何场论为理论基础，分析了无限大体中一个螺位错引起的应力场。
Based on the nonlinear geometry field theory of continuum mechanics, this paper analyzes the stress field due to a screw dislocation in an infinite medium.
泵的轴封采用机械密封，泵体顶部和底部分别装有注水、放泄的螺塞。
Pump shaft seals use mechanical seal, pump top and bottom, respectively, equipped with water injection plug and the drain plug.
所述螺钉的螺杆直接旋入所述固定件的螺孔内，二者的螺纹紧密结合，从而可将两板体牢固连接于一起。
The screw of bolt revolted into threaded hole directly and the screw thread of them are combined tightly, so the two boards can be connected together firmly.
有些动物的眼睛里缺少晶状体，好比说鹦鹉螺。它们眼睛里形成的图像并不清楚，但是仍旧可用。这款微型相机也是同样的道理。
Animals like the nautilus manage with lens-less eyes. The images aren't necessarily sharp, but they're still useful. Same with this tiny camera.
本实用新型提供了一种新颖的顶拔器，它有一根螺杆与调节支承体的中心内螺孔联接。
The utility model provides a novel supporting pulling device which is provided with a screw rod connected with the center of an adjusting supporting body through inner threaded holes.
通过对虹螺山一带酸性花岗岩类副矿物的研究，获得了一些岩体含钼性的矿物学标志。
The study of accessary minerals in acidic granitoids from the Hongluoshandistrict, has revealed some mineralogical markers of molybdenum-bearing potential of certain rock bodies.
其次，先将靛红和丙二腈缩合制备得亲偶极体后与另一分子靛红及肌氨酸进行三组分反应可以合成含有两个不同吲哚片段的双螺环化合物。
Secondly, the three components of isatin, sarcosine and dipolarophiles condensed by isatin and malononitrile were involved in forming dispiro compounds including two of different indole moieties.
螺带式搅拌器起到提升物料的作用，避免固 体物料的迅速沉降，使得固液两相的混合更加均匀；
The helix ribbon type stirrer has the function of lifting materials, avoids quick settlement of solid materials, and makes a mixture of solid phase and liquid phase more uniform;
它的主要特征是包括实心体钉体，其上段为外螺纺杆及配合的固定加压螺帽；
The intramedullary nail is mainly characterized by including a solid nail body, the upper section of which is an external screw thread rod and a copulate fixedly pressure-adding screw cap;
它的主要特征是包括实心体钉体，其上段为外螺纺杆及配合的固定加压螺帽；
The intramedullary nail is mainly characterized by including a solid nail body, the upper section of which is an external screw thread rod and a copulate fixedly pressure-adding screw cap;
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