查询词典 packless

Premium pneumatic actuators are Air-to-Air (Double Acting; optional Spring Return) Actuator for 1/2"- 2" valves features a packless/glandless linear piston design and one-piece actuator/bonnet constructed from high integrity PES, chemically resistant to virtually all acids, caustics, and solvents.

高级气动执行器是适用于通径DN15 ~ DN50阀门的气-到-气执行器，配置无包扎/无衬料线性活塞结构，一体式执行器/阀盖的结构材料为高度完整的PES，抗化学品腐蚀，包括所有的酸，苛性硷，以及溶剂。

Series 65 spring packless radiator supply valves are used on all heating and cooling equipment where manual control is desired.

系列65弹簧无垫圈散热器供水阀适用于需要人工控制的所有加热或冷却设备上。

Only valves such as packless diaphragm or bellows type should be used.

只能使用无衬垫膈膜阀或波纹管阀。

Advantages for improving use ratio of circulating water of modern packless spray cooling tower be suitable for northwest area and its transforms were put forward.

介绍了循环水冷却原理，提出适于我国西北地区的新型无填料喷雾冷却塔提高循环水利用率的优势及改造方案。

Cynanchum Lingtai apricot production in the average weight 65 grams, the brightly-colored fruit, juicy rich, sweet-sour taste, sweet from the nucleolus, when the late Qing Dynasty famous Shaanxi, Gansu provinces, the Qing imperial court Tongzhi tribute for years.

灵台生产的牛心杏平均单果重65克，果实色泽鲜艳，汁多味浓，甜酸适口，离核仁甜，清末时就驰名陕、甘两省，清同治年间曾为朝廷贡品。

Chenopodium album,Solanum nigrum, and Amaranthus retroflexus were very susceptible to the herbicides. Polygonum persicaria and Abutilon theophrasti were relatively less susceptible to the herbicides, and Lycopersicon esculentum was not susceptible to it. The relationship between reduction rates of weed biomass and PPM values of weed leaves 2,4, and 6 days after treatment was established.

供试的6种杂草对该混剂的敏感性存在显著差异：红心藜Chenopodium album、龙葵Solanum nigrum和反枝苋Amaranthus retroflexus对该混剂最敏感，ED90值分别为47.65、71.67和29.17g/hm2；春蓼Polygonum persicaria和苘麻Abutilon theophrasti敏感，ED90值分别为96.91、114.20g/hm2；而番茄不敏感。