The size ranges for these separates are not purely arbitrary,but reflectmajor changes in how the particles behaveandin the physicalproperties theyimpart tosoils.
麻烦老师帮忙做个句子成分剖析，特别是but后面接的是祈使句吗？还有properties和they之间的先行词去什么地方了，不感觉properties是后面句子的宾语，如何就省略可先行词呢？
The size ranges for these separates are not purely arbitrary,but reflectmajor changes in how the particles behaveandin the physicalproperties theyimpart tosoils.
这是not...but...结构，不是...而是...。
but后不是祈使句，而是并列句承前省略了相同的主语they .
the physicalproperties theyimpart tosoils. that引导限制性定语从句，并在从句中作impart的宾语，that省略了。
