first trial order

first trial order trial order是指? first trial 和first instence 的区别? First-order System,First-order logic 分别是什么? pseudo-first-order reaction翻译 翻译：The price for trial order is EUR 700 DDU for sheets. first order derivative second order derivative partial derivative什么意思 请帮忙翻译一下 O(∩_∩)O谢谢but it may be a good chance for you to get the start on others.i suggest you place a trial order first. you know it's the early bird that catches the worm. first-order equation;linear equation是什么意思 We shall book a trial order with you,______ goods are competitive in price and of good quality． should this trial order prove satisfactory to our customersprove should 这里是如果的意思吗should 是不是前提了， 请教外贸高手,有关trial order,谢谢!我们准备向国外一家厂商询价,打算定购少量产品,今后的实际需求会非常大.这算作试购（trial order）吗?trial order是不是定购数量都比较小呢,价格是否比较高? 有关trial order,我们准备向一家国外厂商询价,打算定购少量产品以便对比,今后的实际需求会非常大.这算作试购（trial order）吗?trial order是不是定购数量都比较小呢,价格是否比较高? trial shipment trial by “first order of business”这个短语什么意思? the first order exponential decay rate这个的意思, FOB China-45 days except for first order 50% upon order.怎么翻译