论文部分内容阅读
据腾讯新闻报道,预计今年的春季,我国北方地区沙尘天气过程数为16次至19次,而且由于今春我国北部连续干旱,沙尘天气发生可能性较大。其中,局部地区发生重特大沙尘暴灾害的可能性也较大。沙尘暴这样的不速之客,不仅严重影响了人们的出行和健康,对于像投影机一类的精密仪器而言,更是造成了不小的损伤。因此,为了正常的办公、教学,行业用户在选购投影时除了看重涉及投影效果的硬性指标外,投影机的
According to Tencent news reports, it is estimated that the number of sand and dust weather processes in the northern part of our country will be 16 to 19 times this spring, and the dust weather is more likely to occur due to the continuous drought in northern China this spring. Among them, there is a high possibility of a major sandstorm disaster in some areas. Dust storms such uninvited guests, not only seriously affected people’s travel and health, for a class of precision instruments such as projectors, but also caused no small damage. Therefore, in order to normal office, teaching, industry users in the purchase of projection in addition to focusing on the projection of the hard indicators, the projector’s