非必要的

This is important with hygroscopic materials but can also be essential for non-hygroscopic materials.

材料的预先烘乾不但对湿度敏感的材料很重要而且对非湿度敏感的材料也是必要的。

The rank-sum test is a nonparametric method used in variety evaluation.However,the hypothesis testing theory of this method hasn't been established for multi-trait comprehensive ranking.

秩和比较作为一种非参数方法，虽在作物品种评价方面得到一定的应用，但对多品种多性状的综合评定仍缺乏必要的统计测验基础。

"In deciding whether to offer online sales capability, nonintegrated vendors need to assess how their department store partners are likely to respond to this threat and whether there should be changes in the terms of the contractual relationship between vendors and department stores," write Gertner and Stillman.

Gertner 和Stillman 指出，在决定是否开展网络销售时，非整合的经销商需要估计作为合作方的百货公司是否愿意接受这一挑战，以及是否有必要对双方的合作协议条款进行修改。

Further studies with less cardiotoxic COX-2 inhibitors are needed in NSCLC.

采用较小心脏毒性的环氧化酶-2抑制剂更进一步的研究非小细胞肺癌治疗是必要的。

Grouts other than epoxy may require alternative surface preparation .full bond-strength of epoxy is not generally necessary.

非环氧砂浆可能有另外要求的表面准备。环氧砂浆的完全结合强度通常是不必要的。

TCT smear screening is necessary and safety for routine prenatal tests ,there is no difference in the cervical squamous interepithelial lesions between pregnant and non- pregnant women.

50% 。结论常规产前检查进行TCT筛查是必要的、安全的，妊娠期妇女宫颈鳞状上皮内病变的发生率与非妊娠期妇女相似。

Where materials are handled within closed irradiation containers, it may not be necessary to segregate pharmaceutical from nonpharmaceutical materials, provided there is no risk of the former being contaminated by the latter.

当物料被放进一个密闭辐照容器内时，如果药品不会被其他的物品污染，可能没有必要将制药的物料和非制药的物料进行隔离。

For better manifestation of colours in anisotropic transparent stones the orientation of faceting along optical axes is necessary.

要使非均质性透明宝石矿物的颜色更好地表现出来，沿光轴方向的加工定向是非常必要的。

The Environmental Ministry of the German Land of Hessen also writes, in an information brochure, that a first flush is unnecessary for non-potable applications in the household; it is also not recommended because of the reduced amount of water collected.

环境部德国黑森州的土地还写道，在一个信息小册子，第一次冲洗是不必要的非饮用水的申请家庭中，也建议不要因为减少用水量收取。

The stand we took before the Southern Anhwei Incident, as expressed in our November 9 telegram, was entirely necessary for our shift to the political counter-attack after the incident; otherwise we could not have won over the intermediate sections.

我们在皖南事变前所榷佳电》的立场，对于事变后我们转入政治的反攻是完全必要的，非此即不能争取中间派。

The basic concept of FOP can be summarized as to further optimize effective prescription according to the standard of curative effects and with the aid of modern science and technology and theories of traditional Chinese medicine.

其基本内涵可概括为：以确有疗效的中药复方为研究对象，以现代科学技术和传统中医药理论为技术支持，以该复方所治病证的药效响应为评价标准，以优化重组疗效更优的新复方为研究目的。

Ever since our world has been a world, native forests have been indiscriminately exploited by man.

自从我们的世界一直是世界原生森林被任意剥削人。