preserving duties维持关税;翻译
value preserving值保留
shape preserving保持形状
Preserving differences存小异
Preserving effect抗菌成分迁移测试;防腐效力
preserving fluid保存液;油封液
preserving duty[税收] 维持关税
Preserving health养生
preserving melon的翻译是保存瓜;硬瓤小西瓜
Because there were so many complicated forms which were not standard about the linear map preserving positive definite matrix on Hermitian matrix space.
Hermite矩阵空间上保持正定的线性变换形式复杂多样。
参考来源 - 一类矩阵空间上的保持问题At the present. it is facing with many difficulties among which banks' non-performing loans is the most serious one. Therefore, systematic research on preserving non-performing loans is of both theoretical and practical significance.
当前，国有商业银行发展中面临的突出问题是存在大量的不良贷款，对国有商业银行信贷资产保全进行研究具有重大的理论和实际意义。
参考来源 - 国有商业银行信贷资产保全问题研究Browning and rotting are the main obstruction in preserving litchi fruit.
果皮褐变与果实腐烂是采收后荔枝果实贮运保鲜的主要障碍。
参考来源 - 荔枝果皮褐变机理与保鲜技术研究进展V-T（及物动词） If you preserve a situation or condition, you make sure that it remains as it is, and does not change or end. 维护
We will do everything to preserve peace.
我们将竭尽全力维护和平。
N-UNCOUNT（不可数名词） preservation 维护
...the preservation of the status quo.
…现状的维护。
V-T（及物动词） If you preserve something, you take action to save it or protect it from damage or decay. 保护
We need to preserve the forest.
我们需要保护森林。
N-UNCOUNT（不可数名词） preservation 保护
...the preservation of buildings of architectural or historic interest.
…对具有建筑学或历史意义的建筑物的保护。
V-T（及物动词） If you preserve food, you treat it in order to prevent it from decaying so that you can store it for a long time. 保藏
I like to make puree, using only enough sugar to preserve the plums.
我喜欢做果酱，只用足够的糖来保藏李子。
N-PLURAL（复数型名词） Preserves are foods made by cooking fruit with a large amount of sugar so that they can be stored for a long time. 果酱
She decided to make peach preserves for Christmas gifts.
她决定做桃子果酱作圣诞礼物。
N-COUNT（可数名词） If you say that a job or activity is the preserve of a particular person or group of people, you mean that they are the only ones who take part in it. 独揽之事; 独占的活动
The making and conduct of foreign policy is largely the preserve of the president.
外交政策的制定和实施很大程度上是总统的独揽之事。