Code of Civil Procedure Article 335

The court in which the action is pending, the commissioned judge, or the assigned judge may order an expert witness to state his/her opinion by presenting written expert testimony.In the case provided in the preceding paragraph, the written oath signed in accordance with the provision of the preceding article may be submitted along with the written expert testimony.Where the written expert testimony needs to be explained, the expert witness may be ordered to appear to provide an explanation.
中文原文 民事訴訟法第335條
受訴法院、受命法官或受託法官得命鑑定人具鑑定書陳述意見。
前項情形,依前條規定具結之結文,得附於鑑定書提出。
鑑定書須說明者,得命鑑定人到場說明。

English translation for reference only; the Chinese text prevails. Not legal advice.