弹簧卡子 meaning in Chinese

spring clamp
spring clip
spring-loaded catch

The length should be added if the cost is n ' t increased and the installation is convenient , the diameter should be chose by the local weather condition and the using requirement ; the gas pressure should be not higher than 5 x 10 - 2pa and the emissivity should be less than 0 . 1 , the spring should be small and narrow in order to decrease the heat loss , the gas absorbed getter should not be too many as long as it can absorb the residual gas and keep the vacuum degree
在不影响安装和增加成本的情况下，应适当增加太阳能真空集热管的长度;根据当地的气候条件和使用要求来综合考虑选择直径;国标规定的真空度必须达到5x10 ’ zpa ，发射率小于0 . 1是合理的;弹簧卡子不要选用很宽、很大的尺寸，尽量减少接触热损;吸气剂并非越多越好，只要能够吸收残余气体，保证一定的真空度即可。