The paper compares the factors of silkworm varieties, mounting, cocoon harvesting and drying as well as cocooncooking processing conditions that affect the raw silk neatness.

The cocoons of the lot from Kouguanchun in Shandong Province are considerable good in quality, but fail to meet users' demand in neatness with a score of 92.

Targeting the poor cleanness and neatness of raw silk reeled from summer cocoons, direct steaming is adopted for the cocoons before cooking, with process optimized through experiments so as to improve the quality of raw silk.

DME——a new oxygenated clean fuel for diesel engines;

Monitor and administration of comprehensive performance of clean operating rooms in a hospital;

Methods Interference(restricting the activity of staff) and non-interference group was divided,air samples in 10 three-class clean operating rooms were taken during operations by natural precipitating method.

Ventilating Design for cleaning Factory Building of FuZhou Xianxin photoelectric Technology;

Body Cleaning and Soul Salvation:The Metaphor about Body Cleaning;

The relation of explosive protection and cleaning treatment in chemical synthesis shop in pharmaceutical industry was introduced in this article, including general drawing, layout of workshop and the requirements in the specialties of architectural construction, ventilation, electrical engineering, equipment and water feeding and discharge.

Safety, high-efficiency, cleanness and optimization is the development trend of coal industry.

Based on the highefficiency intensifying achievements, Xinglongzhuang Coal Mine puts forward a direction for highefficiency and cleanness so as to exploit a new way of development and reconstruction for coal proj.

Safety, high - efficiency, cleanness and optimization is the development trend of coal industry.

The air conditioning duct in hospital requires higher cleanliness, integrity and strength than general air conditioning duct, which limit the use of the later.