接西瓜造句怎麼寫

4、This paper tracked the development of the PC non-phosgene process, new products and the forecast of the market remand. Advanced some advices about the PC industry of our country.

2、利用該品種做西瓜砧木，嫁接西瓜成活率高，幼苗在低溫下伸長快、西瓜易坐果、抗枯萎病，提高產量30%以上。

1、以自根西瓜為對照，研究了嫁接西瓜果實的蔗糖積累特*及相關代謝酶的調控作用。

3、外源赤黴素處理使嫁接西瓜果實的轉化酶的活*提高，而使SPS和SS的活*有所降低。