300c

1

The operation conditions is : temperature 28 ~ 300C ;

运行条件：温度28~300C；
2

The design scope is 8000M3 / d , the temperature of water is 20 ~ 300C .

设计规模8000M3/d，水温20～30℃。
3

By analyzing Twi-differential algorithm , a very marked inflexion can be found on the temperature zone of 800 ~ 300C .

但经过二次差分分析后发现，在800～300~C温度区域往存在着一个二阶差分（绝对值）最大值，即在此温度区间出存在一个非常显著的曲线拐点。
4

Under atmospheric pressure and 300C , the effect of different carriers , reaction temperature , a bit of additive and different C2H5I / C2H5OH ratios on the carbonylation of ethanol to ethyl propionate over supported Ni-Cu catalyst was studied .

研究了Ni-Cu催化剂的不同载体、反应温度、添加剂和C2H5I/C2H5OH比对乙醇羰化合成丙酸乙酯的影响。
5

The Ca2KNa ( PO4 ) 2 ceramic was synthesized by solid state reaction of calcium carbonate , potassium dihydrogen phosphate and sodium dihydrogen phosphate dihydrate in 2 / 1 / 1 molar ratio at 1 300C ° for 4 h.

分析化学纯度的碳酸钙、磷酸二氢钾、磷酸二氢钠按照2∶1∶1的摩尔比混合后于1300℃高温反应4h，得到了组成符合Ca2KNa（PO4）2的正磷酸钠钾钙陶瓷。