定期的

Rabbits were infected orally with the eggs in gravid proglottid secreted from dogs experimentally infected with different numbers of Taenia pisiformis.

取人工感染豆状带绦虫犬自然排出的孕卵节片，虫卵计数后以不同数量感染家兔，定期采血，待囊尾蚴成熟后扑杀，计数。

In the absence of effective treatment, control of silicosis depends on prevention with face masks, proper ventilation, and X-ray monitoring of workers' lungs.

在缺乏有效治疗的情况下，控制硅肺主要在预防，要使用面罩、适当通风、定期对工人肺部进行X光检查。

In the absence of effective treatment, control of silicosis depends on prevention with face masks, proper ventilation, and X-ray monitoring of workers' lung s.

在缺乏有效治疗的情况下，控制硅肺主要在预防，要使用面罩、适当通风、定期对工人肺部进行X光检查。

A routine application of Chem-Dry Protectant will help your fabrics stay cleaner longer.

定期添加保护剂可以使您的布艺家具保持干净时间更长。

7 Dosage should be controlled by periodic determinations of prothrombin time or other suitable coagulation tests.

必须定期检查凝血酶原时间，或做其他相应的凝血试验来控制剂量。

7 Dosage should be controlled by periodic determinatio of prothrombin time or other suitable coagulation tests.

必须定期检查凝血酶原时间，或做其他相应的凝血试验来控制剂量。

Through strengthening precipitate operation,periodicity changing mother liquid,equiping filtering device in this system and introducing over heat steam into the bottom of a bsorption column,the quality of yewwlow sodium prussiate can be improved.

通过强化沉降操作，定期更换母液，并在系统中增设过滤装置，将过热蒸汽通入吸收塔底部，改善了黄血盐钠的质量。

The second is the publicized number of regular members.

二是公开的若干成员定期。

the awful sanitary status,with a high incidence of pre puce disease,of the genitals of fresh has brought worries to us.the instructionof sexual health should be enhanced.

结论男 大学新生外生殖器的卫生状况令人担忧，包皮疾患较多。应加强青少年生殖健康知识教育，同时有必要对青少年外生殖器疾患进行定期普查。

Several Asian countries already had performance art but only put on short performances and infrequently. They did not know that today performance art was so important as an art medium.

虽然部份亚洲国家已经开始发展行为艺术，但表演活动很少，而且并非定期举行，他们并不知道，行为艺术已经发展成为现今社会一个重要的艺术媒界。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。