essentialityn.本性；真髓；本质essentialadj.本质的；必要的；重要的n.要素；必需品Essential services will be maintained.基本的公用业务一定得到保障。essential multiple output prime implicant实质多重输出本原essential oil of Chenopodium ambrosioides土荆芥精油essentially coextensive with genus Bos.本质上同延于牛属。essential management of competitive power竞争力要素管理essential hypercholestbiliary obstruction肝外胆管梗阻essential living standard security system低保制度Essentials of business communication II.商务沟通精要2。essential Living Standard Security Finance“低保”资金Essentials of Contemporary Campus Planning当代高校校园规划要点提示