覆膜

Generally, the FD treatment has decreased the densities of natural enemies and saprophagous insects .

覆田天敌及腐食者密度低于灌溉田。

Landlocked location used for blocking the coolth hot stamping, covered with film, transfer, die-cutting, cutting rewinder, Super glazing, and so on.

如轮转烫印、寒烫印、覆、迁徙、模切、不不分切双卷、超等上光等。

The result shows that it can effectively prevent the flammable liquid volatilizezing from the solid alcohol fuel by coating polymer on surface for the environment - friendly purpose.

结果表明,通过高分子覆工艺,可以有效地抑固体燃料中可燃性液体的挥发,达到安全环保的用。

Compared with that of furane resin bonded sand,the feasibility of phenol resin bonded sand in forming a uniform coating layer in the inside mould surface is studied as well.

本文分析研究了砂在铸型中的成型条件及光洁内表面的形成机理，并对比研究了覆自硬砂在铸型内表面形成均匀覆砂层的可行性。