《天工开物·中篇·膏液》
以上所列举的只是大概的情况而已，至于其他油料及其榨油率，因为没有进行深入考察和试验，或者有的已经在某个地方试验过而尚未推广的，那就有待以后再进行补述了。
此其大端，其他未穷究试验，与夫一方已试而他方未知者，尚有待云。
All the above are general examples, as for other oil crops and yields, because there have been no in-depth investigations or tests, and some have been tested in a certain place but have not been promoted, so they can be added later.