A real and pressing issue is that many plant species have not yet been cataloged, and so their place in the ecosystem is unknown.
一个现实而紧迫的问题是，许多植物物种还没有被编目，因此它们在生态系统中的位置是未知的。
The fruit wrapping and twisting mechanism for packing fruit with plant fiber paper includes a pressing lever, a fruit supporting mechanism and a fruit clamping mechanism set from top to bottom.
一种植物纤维纸水果包裹扭结机构，由一压杆、一托果机构和一夹果机构三部分 构成，三者呈上、中、下分体设置；
Edible oil is one of basic materials maintaining human life. Mechanical pressing is one of the most popular methods of oil separation from oil plant.
食用油脂是维持人类生存最基本物质之一，压榨法取油是植物油料加工最主要的方法之一。
There are many problems in olive oil pressing technique after the plant was introduced into China, chief ly shown as poor quality of oil and low oil yield.
橄榄油是世界上名贵的木本植物油，我国引种油橄榄在榨油技术方面还存在诸多问题，集中表现为油质量差，出油效率低。
The experiments of stress-strain of oil plant by uniaxial cold pressing under double surface for flow of fluids through a porous medium were carried out.
进行了花生、 大豆、芝麻、亚麻籽双面渗流冷榨的应力应变试验。
The experiments of stress-strain of oil plant by uniaxial cold pressing under double surface for flow of fluids through a porous medium were carried out.
进行了花生、 大豆、芝麻、亚麻籽双面渗流冷榨的应力应变试验。
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